Initial attempt a switch to composer and PHP-8.1 compatibility

204 files changed, 0 insertions, 17743 deletions

diff --git a/inc/lib/Twig/Autoloader.php b/inc/lib/Twig/Autoloader.php
deleted file mode 100644
index 212af544..00000000
--- a/inc/lib/Twig/Autoloader.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Autoloader class is deprecated since version 1.21 and will be removed in 2.0. Use Composer instead.', E_USER_DEPRECATED);
-
-/**
- * Autoloads Twig classes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.21 and will be removed in 2.0. Use Composer instead. 2.0.
- */
-class Twig_Autoloader
-{
-    /**
-     * Registers Twig_Autoloader as an SPL autoloader.
-     *
-     * @param bool $prepend whether to prepend the autoloader or not
-     */
-    public static function register($prepend = false)
-    {
-        @trigger_error('Using Twig_Autoloader is deprecated since version 1.21. Use Composer instead.', E_USER_DEPRECATED);
-
-        if (PHP_VERSION_ID < 50300) {
-            spl_autoload_register(array(__CLASS__, 'autoload'));
-        } else {
-            spl_autoload_register(array(__CLASS__, 'autoload'), true, $prepend);
-        }
-    }
-
-    /**
-     * Handles autoloading of classes.
-     *
-     * @param string $class a class name
-     */
-    public static function autoload($class)
-    {
-        if (0 !== strpos($class, 'Twig')) {
-            return;
-        }
-
-        if (is_file($file = dirname(__FILE__).'/../'.str_replace(array('_', "\0"), array('/', ''), $class).'.php')) {
-            require $file;
-        }
-    }
-}
diff --git a/inc/lib/Twig/BaseNodeVisitor.php b/inc/lib/Twig/BaseNodeVisitor.php
deleted file mode 100644
index d8ef02fb..00000000
--- a/inc/lib/Twig/BaseNodeVisitor.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_BaseNodeVisitor can be used to make node visitors compatible with Twig 1.x and 2.x.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-abstract class Twig_BaseNodeVisitor implements Twig_NodeVisitorInterface
-{
-    final public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if (!$node instanceof Twig_Node) {
-            throw new LogicException('Twig_BaseNodeVisitor only supports Twig_Node instances.');
-        }
-
-        return $this->doEnterNode($node, $env);
-    }
-
-    final public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if (!$node instanceof Twig_Node) {
-            throw new LogicException('Twig_BaseNodeVisitor only supports Twig_Node instances.');
-        }
-
-        return $this->doLeaveNode($node, $env);
-    }
-
-    /**
-     * Called before child nodes are visited.
-     *
-     * @return Twig_Node The modified node
-     */
-    abstract protected function doEnterNode(Twig_Node $node, Twig_Environment $env);
-
-    /**
-     * Called after child nodes are visited.
-     *
-     * @return Twig_Node|false The modified node or false if the node must be removed
-     */
-    abstract protected function doLeaveNode(Twig_Node $node, Twig_Environment $env);
-}
-
-class_alias('Twig_BaseNodeVisitor', 'Twig\NodeVisitor\AbstractNodeVisitor', false);
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
diff --git a/inc/lib/Twig/Cache/Filesystem.php b/inc/lib/Twig/Cache/Filesystem.php
deleted file mode 100644
index 65976282..00000000
--- a/inc/lib/Twig/Cache/Filesystem.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Implements a cache on the filesystem.
- *
- * @author Andrew Tch <andrew@noop.lv>
- */
-class Twig_Cache_Filesystem implements Twig_CacheInterface
-{
-    const FORCE_BYTECODE_INVALIDATION = 1;
-
-    private $directory;
-    private $options;
-
-    /**
-     * @param $directory string The root cache directory
-     * @param $options   int    A set of options
-     */
-    public function __construct($directory, $options = 0)
-    {
-        $this->directory = rtrim($directory, '\/').'/';
-        $this->options = $options;
-    }
-
-    public function generateKey($name, $className)
-    {
-        $hash = hash('sha256', $className);
-
-        return $this->directory.$hash[0].$hash[1].'/'.$hash.'.php';
-    }
-
-    public function load($key)
-    {
-        if (file_exists($key)) {
-            @include_once $key;
-        }
-    }
-
-    public function write($key, $content)
-    {
-        $dir = dirname($key);
-        if (!is_dir($dir)) {
-            if (false === @mkdir($dir, 0777, true)) {
-                if (PHP_VERSION_ID >= 50300) {
-                    clearstatcache(true, $dir);
-                }
-                if (!is_dir($dir)) {
-                    throw new RuntimeException(sprintf('Unable to create the cache directory (%s).', $dir));
-                }
-            }
-        } elseif (!is_writable($dir)) {
-            throw new RuntimeException(sprintf('Unable to write in the cache directory (%s).', $dir));
-        }
-
-        $tmpFile = tempnam($dir, basename($key));
-        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $key)) {
-            @chmod($key, 0666 & ~umask());
-
-            if (self::FORCE_BYTECODE_INVALIDATION == ($this->options & self::FORCE_BYTECODE_INVALIDATION)) {
-                // Compile cached file into bytecode cache
-                if (function_exists('opcache_invalidate')) {
-                    opcache_invalidate($key, true);
-                } elseif (function_exists('apc_compile_file')) {
-                    apc_compile_file($key);
-                }
-            }
-
-            return;
-        }
-
-        throw new RuntimeException(sprintf('Failed to write cache file "%s".', $key));
-    }
-
-    public function getTimestamp($key)
-    {
-        if (!file_exists($key)) {
-            return 0;
-        }
-
-        return (int) @filemtime($key);
-    }
-}
-
-class_alias('Twig_Cache_Filesystem', 'Twig\Cache\FilesystemCache', false);
diff --git a/inc/lib/Twig/Cache/Null.php b/inc/lib/Twig/Cache/Null.php
deleted file mode 100644
index 69d1d2f9..00000000
--- a/inc/lib/Twig/Cache/Null.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Implements a no-cache strategy.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Cache_Null implements Twig_CacheInterface
-{
-    public function generateKey($name, $className)
-    {
-        return '';
-    }
-
-    public function write($key, $content)
-    {
-    }
-
-    public function load($key)
-    {
-    }
-
-    public function getTimestamp($key)
-    {
-        return 0;
-    }
-}
-
-class_alias('Twig_Cache_Null', 'Twig\Cache\NullCache', false);
diff --git a/inc/lib/Twig/CacheInterface.php b/inc/lib/Twig/CacheInterface.php
deleted file mode 100644
index 776808bf..00000000
--- a/inc/lib/Twig/CacheInterface.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by cache classes.
- *
- * It is highly recommended to always store templates on the filesystem to
- * benefit from the PHP opcode cache. This interface is mostly useful if you
- * need to implement a custom strategy for storing templates on the filesystem.
- *
- * @author Andrew Tch <andrew@noop.lv>
- */
-interface Twig_CacheInterface
-{
-    /**
-     * Generates a cache key for the given template class name.
-     *
-     * @param string $name      The template name
-     * @param string $className The template class name
-     *
-     * @return string
-     */
-    public function generateKey($name, $className);
-
-    /**
-     * Writes the compiled template to cache.
-     *
-     * @param string $key     The cache key
-     * @param string $content The template representation as a PHP class
-     */
-    public function write($key, $content);
-
-    /**
-     * Loads a template from the cache.
-     *
-     * @param string $key The cache key
-     */
-    public function load($key);
-
-    /**
-     * Returns the modification timestamp of a key.
-     *
-     * @param string $key The cache key
-     *
-     * @return int
-     */
-    public function getTimestamp($key);
-}
-
-class_alias('Twig_CacheInterface', 'Twig\Cache\CacheInterface', false);
diff --git a/inc/lib/Twig/Compiler.php b/inc/lib/Twig/Compiler.php
deleted file mode 100644
index 803eb896..00000000
--- a/inc/lib/Twig/Compiler.php
+++ /dev/null
@@ -1,286 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Compiles a node to PHP code.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Compiler implements Twig_CompilerInterface
-{
-    protected $lastLine;
-    protected $source;
-    protected $indentation;
-    protected $env;
-    protected $debugInfo = array();
-    protected $sourceOffset;
-    protected $sourceLine;
-    protected $filename;
-    private $varNameSalt = 0;
-
-    public function __construct(Twig_Environment $env)
-    {
-        $this->env = $env;
-    }
-
-    /**
-     * @deprecated since 1.25 (to be removed in 2.0)
-     */
-    public function getFilename()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);
-
-        return $this->filename;
-    }
-
-    /**
-     * Returns the environment instance related to this compiler.
-     *
-     * @return Twig_Environment
-     */
-    public function getEnvironment()
-    {
-        return $this->env;
-    }
-
-    /**
-     * Gets the current PHP code after compilation.
-     *
-     * @return string The PHP code
-     */
-    public function getSource()
-    {
-        return $this->source;
-    }
-
-    /**
-     * Compiles a node.
-     *
-     * @param Twig_NodeInterface $node        The node to compile
-     * @param int                $indentation The current indentation
-     *
-     * @return $this
-     */
-    public function compile(Twig_NodeInterface $node, $indentation = 0)
-    {
-        $this->lastLine = null;
-        $this->source = '';
-        $this->debugInfo = array();
-        $this->sourceOffset = 0;
-        // source code starts at 1 (as we then increment it when we encounter new lines)
-        $this->sourceLine = 1;
-        $this->indentation = $indentation;
-        $this->varNameSalt = 0;
-
-        if ($node instanceof Twig_Node_Module) {
-            // to be removed in 2.0
-            $this->filename = $node->getTemplateName();
-        }
-
-        $node->compile($this);
-
-        return $this;
-    }
-
-    public function subcompile(Twig_NodeInterface $node, $raw = true)
-    {
-        if (false === $raw) {
-            $this->source .= str_repeat(' ', $this->indentation * 4);
-        }
-
-        $node->compile($this);
-
-        return $this;
-    }
-
-    /**
-     * Adds a raw string to the compiled code.
-     *
-     * @param string $string The string
-     *
-     * @return $this
-     */
-    public function raw($string)
-    {
-        $this->source .= $string;
-
-        return $this;
-    }
-
-    /**
-     * Writes a string to the compiled code by adding indentation.
-     *
-     * @return $this
-     */
-    public function write()
-    {
-        $strings = func_get_args();
-        foreach ($strings as $string) {
-            $this->source .= str_repeat(' ', $this->indentation * 4).$string;
-        }
-
-        return $this;
-    }
-
-    /**
-     * Appends an indentation to the current PHP code after compilation.
-     *
-     * @return $this
-     *
-     * @deprecated since 1.27 (to be removed in 2.0).
-     */
-    public function addIndentation()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use write(\'\') instead.', E_USER_DEPRECATED);
-
-        $this->source .= str_repeat(' ', $this->indentation * 4);
-
-        return $this;
-    }
-
-    /**
-     * Adds a quoted string to the compiled code.
-     *
-     * @param string $value The string
-     *
-     * @return $this
-     */
-    public function string($value)
-    {
-        $this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));
-
-        return $this;
-    }
-
-    /**
-     * Returns a PHP representation of a given value.
-     *
-     * @param mixed $value The value to convert
-     *
-     * @return $this
-     */
-    public function repr($value)
-    {
-        if (is_int($value) || is_float($value)) {
-            if (false !== $locale = setlocale(LC_NUMERIC, '0')) {
-                setlocale(LC_NUMERIC, 'C');
-            }
-
-            $this->raw($value);
-
-            if (false !== $locale) {
-                setlocale(LC_NUMERIC, $locale);
-            }
-        } elseif (null === $value) {
-            $this->raw('null');
-        } elseif (is_bool($value)) {
-            $this->raw($value ? 'true' : 'false');
-        } elseif (is_array($value)) {
-            $this->raw('array(');
-            $first = true;
-            foreach ($value as $key => $v) {
-                if (!$first) {
-                    $this->raw(', ');
-                }
-                $first = false;
-                $this->repr($key);
-                $this->raw(' => ');
-                $this->repr($v);
-            }
-            $this->raw(')');
-        } else {
-            $this->string($value);
-        }
-
-        return $this;
-    }
-
-    /**
-     * Adds debugging information.
-     *
-     * @return $this
-     */
-    public function addDebugInfo(Twig_NodeInterface $node)
-    {
-        if ($node->getTemplateLine() != $this->lastLine) {
-            $this->write(sprintf("// line %d\n", $node->getTemplateLine()));
-
-            // when mbstring.func_overload is set to 2
-            // mb_substr_count() replaces substr_count()
-            // but they have different signatures!
-            if (((int) ini_get('mbstring.func_overload')) & 2) {
-                @trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-                // this is much slower than the "right" version
-                $this->sourceLine += mb_substr_count(mb_substr($this->source, $this->sourceOffset), "\n");
-            } else {
-                $this->sourceLine += substr_count($this->source, "\n", $this->sourceOffset);
-            }
-            $this->sourceOffset = strlen($this->source);
-            $this->debugInfo[$this->sourceLine] = $node->getTemplateLine();
-
-            $this->lastLine = $node->getTemplateLine();
-        }
-
-        return $this;
-    }
-
-    public function getDebugInfo()
-    {
-        ksort($this->debugInfo);
-
-        return $this->debugInfo;
-    }
-
-    /**
-     * Indents the generated code.
-     *
-     * @param int $step The number of indentation to add
-     *
-     * @return $this
-     */
-    public function indent($step = 1)
-    {
-        $this->indentation += $step;
-
-        return $this;
-    }
-
-    /**
-     * Outdents the generated code.
-     *
-     * @param int $step The number of indentation to remove
-     *
-     * @return $this
-     *
-     * @throws LogicException When trying to outdent too much so the indentation would become negative
-     */
-    public function outdent($step = 1)
-    {
-        // can't outdent by more steps than the current indentation level
-        if ($this->indentation < $step) {
-            throw new LogicException('Unable to call outdent() as the indentation would become negative.');
-        }
-
-        $this->indentation -= $step;
-
-        return $this;
-    }
-
-    public function getVarName()
-    {
-        return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->varNameSalt++));
-    }
-}
-
-class_alias('Twig_Compiler', 'Twig\Compiler', false);
-class_exists('Twig_Node');
diff --git a/inc/lib/Twig/CompilerInterface.php b/inc/lib/Twig/CompilerInterface.php
deleted file mode 100644
index 42872c9c..00000000
--- a/inc/lib/Twig/CompilerInterface.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by compiler classes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_CompilerInterface
-{
-    /**
-     * Compiles a node.
-     *
-     * @return $this
-     */
-    public function compile(Twig_NodeInterface $node);
-
-    /**
-     * Gets the current PHP code after compilation.
-     *
-     * @return string The PHP code
-     */
-    public function getSource();
-}
diff --git a/inc/lib/Twig/ContainerRuntimeLoader.php b/inc/lib/Twig/ContainerRuntimeLoader.php
deleted file mode 100644
index 814ab58b..00000000
--- a/inc/lib/Twig/ContainerRuntimeLoader.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-use Psr\Container\ContainerInterface;
-
-/**
- * Lazily loads Twig runtime implementations from a PSR-11 container.
- *
- * Note that the runtime services MUST use their class names as identifiers.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Robin Chalas <robin.chalas@gmail.com>
- */
-class Twig_ContainerRuntimeLoader implements Twig_RuntimeLoaderInterface
-{
-    private $container;
-
-    public function __construct(ContainerInterface $container)
-    {
-        $this->container = $container;
-    }
-
-    public function load($class)
-    {
-        if ($this->container->has($class)) {
-            return $this->container->get($class);
-        }
-    }
-}
-
-class_alias('Twig_ContainerRuntimeLoader', 'Twig\RuntimeLoader\ContainerRuntimeLoader', false);
diff --git a/inc/lib/Twig/Environment.php b/inc/lib/Twig/Environment.php
deleted file mode 100644
index b15f2aff..00000000
--- a/inc/lib/Twig/Environment.php
+++ /dev/null
@@ -1,1604 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Stores the Twig configuration.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Environment
-{
-    const VERSION = '1.35.4-DEV';
-    const VERSION_ID = 13504;
-    const MAJOR_VERSION = 1;
-    const MINOR_VERSION = 35;
-    const RELEASE_VERSION = 4;
-    const EXTRA_VERSION = 'DEV';
-
-    protected $charset;
-    protected $loader;
-    protected $debug;
-    protected $autoReload;
-    protected $cache;
-    protected $lexer;
-    protected $parser;
-    protected $compiler;
-    protected $baseTemplateClass;
-    protected $extensions;
-    protected $parsers;
-    protected $visitors;
-    protected $filters;
-    protected $tests;
-    protected $functions;
-    protected $globals;
-    protected $runtimeInitialized = false;
-    protected $extensionInitialized = false;
-    protected $loadedTemplates;
-    protected $strictVariables;
-    protected $unaryOperators;
-    protected $binaryOperators;
-    protected $templateClassPrefix = '__TwigTemplate_';
-    protected $functionCallbacks = array();
-    protected $filterCallbacks = array();
-    protected $staging;
-
-    private $originalCache;
-    private $bcWriteCacheFile = false;
-    private $bcGetCacheFilename = false;
-    private $lastModifiedExtension = 0;
-    private $extensionsByClass = array();
-    private $runtimeLoaders = array();
-    private $runtimes = array();
-    private $optionsHash;
-    private $loading = array();
-
-    /**
-     * Constructor.
-     *
-     * Available options:
-     *
-     *  * debug: When set to true, it automatically set "auto_reload" to true as
-     *           well (default to false).
-     *
-     *  * charset: The charset used by the templates (default to UTF-8).
-     *
-     *  * base_template_class: The base template class to use for generated
-     *                         templates (default to Twig_Template).
-     *
-     *  * cache: An absolute path where to store the compiled templates,
-     *           a Twig_Cache_Interface implementation,
-     *           or false to disable compilation cache (default).
-     *
-     *  * auto_reload: Whether to reload the template if the original source changed.
-     *                 If you don't provide the auto_reload option, it will be
-     *                 determined automatically based on the debug value.
-     *
-     *  * strict_variables: Whether to ignore invalid variables in templates
-     *                      (default to false).
-     *
-     *  * autoescape: Whether to enable auto-escaping (default to html):
-     *                  * false: disable auto-escaping
-     *                  * true: equivalent to html
-     *                  * html, js: set the autoescaping to one of the supported strategies
-     *                  * name: set the autoescaping strategy based on the template name extension
-     *                  * PHP callback: a PHP callback that returns an escaping strategy based on the template "name"
-     *
-     *  * optimizations: A flag that indicates which optimizations to apply
-     *                   (default to -1 which means that all optimizations are enabled;
-     *                   set it to 0 to disable).
-     *
-     * @param Twig_LoaderInterface $loader
-     * @param array                $options An array of options
-     */
-    public function __construct(Twig_LoaderInterface $loader = null, $options = array())
-    {
-        if (null !== $loader) {
-            $this->setLoader($loader);
-        } else {
-            @trigger_error('Not passing a Twig_LoaderInterface as the first constructor argument of Twig_Environment is deprecated since version 1.21.', E_USER_DEPRECATED);
-        }
-
-        $options = array_merge(array(
-            'debug' => false,
-            'charset' => 'UTF-8',
-            'base_template_class' => 'Twig_Template',
-            'strict_variables' => false,
-            'autoescape' => 'html',
-            'cache' => false,
-            'auto_reload' => null,
-            'optimizations' => -1,
-        ), $options);
-
-        $this->debug = (bool) $options['debug'];
-        $this->charset = strtoupper($options['charset']);
-        $this->baseTemplateClass = $options['base_template_class'];
-        $this->autoReload = null === $options['auto_reload'] ? $this->debug : (bool) $options['auto_reload'];
-        $this->strictVariables = (bool) $options['strict_variables'];
-        $this->setCache($options['cache']);
-
-        $this->addExtension(new Twig_Extension_Core());
-        $this->addExtension(new Twig_Extension_Escaper($options['autoescape']));
-        $this->addExtension(new Twig_Extension_Optimizer($options['optimizations']));
-        $this->staging = new Twig_Extension_Staging();
-
-        // For BC
-        if (is_string($this->originalCache)) {
-            $r = new ReflectionMethod($this, 'writeCacheFile');
-            if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                @trigger_error('The Twig_Environment::writeCacheFile method is deprecated since version 1.22 and will be removed in Twig 2.0.', E_USER_DEPRECATED);
-
-                $this->bcWriteCacheFile = true;
-            }
-
-            $r = new ReflectionMethod($this, 'getCacheFilename');
-            if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                @trigger_error('The Twig_Environment::getCacheFilename method is deprecated since version 1.22 and will be removed in Twig 2.0.', E_USER_DEPRECATED);
-
-                $this->bcGetCacheFilename = true;
-            }
-        }
-    }
-
-    /**
-     * Gets the base template class for compiled templates.
-     *
-     * @return string The base template class name
-     */
-    public function getBaseTemplateClass()
-    {
-        return $this->baseTemplateClass;
-    }
-
-    /**
-     * Sets the base template class for compiled templates.
-     *
-     * @param string $class The base template class name
-     */
-    public function setBaseTemplateClass($class)
-    {
-        $this->baseTemplateClass = $class;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Enables debugging mode.
-     */
-    public function enableDebug()
-    {
-        $this->debug = true;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Disables debugging mode.
-     */
-    public function disableDebug()
-    {
-        $this->debug = false;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Checks if debug mode is enabled.
-     *
-     * @return bool true if debug mode is enabled, false otherwise
-     */
-    public function isDebug()
-    {
-        return $this->debug;
-    }
-
-    /**
-     * Enables the auto_reload option.
-     */
-    public function enableAutoReload()
-    {
-        $this->autoReload = true;
-    }
-
-    /**
-     * Disables the auto_reload option.
-     */
-    public function disableAutoReload()
-    {
-        $this->autoReload = false;
-    }
-
-    /**
-     * Checks if the auto_reload option is enabled.
-     *
-     * @return bool true if auto_reload is enabled, false otherwise
-     */
-    public function isAutoReload()
-    {
-        return $this->autoReload;
-    }
-
-    /**
-     * Enables the strict_variables option.
-     */
-    public function enableStrictVariables()
-    {
-        $this->strictVariables = true;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Disables the strict_variables option.
-     */
-    public function disableStrictVariables()
-    {
-        $this->strictVariables = false;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Checks if the strict_variables option is enabled.
-     *
-     * @return bool true if strict_variables is enabled, false otherwise
-     */
-    public function isStrictVariables()
-    {
-        return $this->strictVariables;
-    }
-
-    /**
-     * Gets the current cache implementation.
-     *
-     * @param bool $original Whether to return the original cache option or the real cache instance
-     *
-     * @return Twig_CacheInterface|string|false A Twig_CacheInterface implementation,
-     *                                          an absolute path to the compiled templates,
-     *                                          or false to disable cache
-     */
-    public function getCache($original = true)
-    {
-        return $original ? $this->originalCache : $this->cache;
-    }
-
-    /**
-     * Sets the current cache implementation.
-     *
-     * @param Twig_CacheInterface|string|false $cache A Twig_CacheInterface implementation,
-     *                                                an absolute path to the compiled templates,
-     *                                                or false to disable cache
-     */
-    public function setCache($cache)
-    {
-        if (is_string($cache)) {
-            $this->originalCache = $cache;
-            $this->cache = new Twig_Cache_Filesystem($cache);
-        } elseif (false === $cache) {
-            $this->originalCache = $cache;
-            $this->cache = new Twig_Cache_Null();
-        } elseif (null === $cache) {
-            @trigger_error('Using "null" as the cache strategy is deprecated since version 1.23 and will be removed in Twig 2.0.', E_USER_DEPRECATED);
-            $this->originalCache = false;
-            $this->cache = new Twig_Cache_Null();
-        } elseif ($cache instanceof Twig_CacheInterface) {
-            $this->originalCache = $this->cache = $cache;
-        } else {
-            throw new LogicException(sprintf('Cache can only be a string, false, or a Twig_CacheInterface implementation.'));
-        }
-    }
-
-    /**
-     * Gets the cache filename for a given template.
-     *
-     * @param string $name The template name
-     *
-     * @return string|false The cache file name or false when caching is disabled
-     *
-     * @deprecated since 1.22 (to be removed in 2.0)
-     */
-    public function getCacheFilename($name)
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        $key = $this->cache->generateKey($name, $this->getTemplateClass($name));
-
-        return !$key ? false : $key;
-    }
-
-    /**
-     * Gets the template class associated with the given string.
-     *
-     * The generated template class is based on the following parameters:
-     *
-     *  * The cache key for the given template;
-     *  * The currently enabled extensions;
-     *  * Whether the Twig C extension is available or not;
-     *  * PHP version;
-     *  * Twig version;
-     *  * Options with what environment was created.
-     *
-     * @param string   $name  The name for which to calculate the template class name
-     * @param int|null $index The index if it is an embedded template
-     *
-     * @return string The template class name
-     */
-    public function getTemplateClass($name, $index = null)
-    {
-        $key = $this->getLoader()->getCacheKey($name).$this->optionsHash;
-
-        return $this->templateClassPrefix.hash('sha256', $key).(null === $index ? '' : '_'.$index);
-    }
-
-    /**
-     * Gets the template class prefix.
-     *
-     * @return string The template class prefix
-     *
-     * @deprecated since 1.22 (to be removed in 2.0)
-     */
-    public function getTemplateClassPrefix()
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->templateClassPrefix;
-    }
-
-    /**
-     * Renders a template.
-     *
-     * @param string $name    The template name
-     * @param array  $context An array of parameters to pass to the template
-     *
-     * @return string The rendered template
-     *
-     * @throws Twig_Error_Loader  When the template cannot be found
-     * @throws Twig_Error_Syntax  When an error occurred during compilation
-     * @throws Twig_Error_Runtime When an error occurred during rendering
-     */
-    public function render($name, array $context = array())
-    {
-        return $this->loadTemplate($name)->render($context);
-    }
-
-    /**
-     * Displays a template.
-     *
-     * @param string $name    The template name
-     * @param array  $context An array of parameters to pass to the template
-     *
-     * @throws Twig_Error_Loader  When the template cannot be found
-     * @throws Twig_Error_Syntax  When an error occurred during compilation
-     * @throws Twig_Error_Runtime When an error occurred during rendering
-     */
-    public function display($name, array $context = array())
-    {
-        $this->loadTemplate($name)->display($context);
-    }
-
-    /**
-     * Loads a template.
-     *
-     * @param string|Twig_TemplateWrapper|Twig_Template $name The template name
-     *
-     * @throws Twig_Error_Loader  When the template cannot be found
-     * @throws Twig_Error_Runtime When a previously generated cache is corrupted
-     * @throws Twig_Error_Syntax  When an error occurred during compilation
-     *
-     * @return Twig_TemplateWrapper
-     */
-    public function load($name)
-    {
-        if ($name instanceof Twig_TemplateWrapper) {
-            return $name;
-        }
-
-        if ($name instanceof Twig_Template) {
-            return new Twig_TemplateWrapper($this, $name);
-        }
-
-        return new Twig_TemplateWrapper($this, $this->loadTemplate($name));
-    }
-
-    /**
-     * Loads a template internal representation.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param string $name  The template name
-     * @param int    $index The index if it is an embedded template
-     *
-     * @return Twig_TemplateInterface A template instance representing the given template name
-     *
-     * @throws Twig_Error_Loader  When the template cannot be found
-     * @throws Twig_Error_Runtime When a previously generated cache is corrupted
-     * @throws Twig_Error_Syntax  When an error occurred during compilation
-     *
-     * @internal
-     */
-    public function loadTemplate($name, $index = null)
-    {
-        $cls = $mainCls = $this->getTemplateClass($name);
-        if (null !== $index) {
-            $cls .= '_'.$index;
-        }
-
-        if (isset($this->loadedTemplates[$cls])) {
-            return $this->loadedTemplates[$cls];
-        }
-
-        if (!class_exists($cls, false)) {
-            if ($this->bcGetCacheFilename) {
-                $key = $this->getCacheFilename($name);
-            } else {
-                $key = $this->cache->generateKey($name, $mainCls);
-            }
-
-            if (!$this->isAutoReload() || $this->isTemplateFresh($name, $this->cache->getTimestamp($key))) {
-                $this->cache->load($key);
-            }
-
-            if (!class_exists($cls, false)) {
-                $loader = $this->getLoader();
-                if (!$loader instanceof Twig_SourceContextLoaderInterface) {
-                    $source = new Twig_Source($loader->getSource($name), $name);
-                } else {
-                    $source = $loader->getSourceContext($name);
-                }
-
-                $content = $this->compileSource($source);
-
-                if ($this->bcWriteCacheFile) {
-                    $this->writeCacheFile($key, $content);
-                } else {
-                    $this->cache->write($key, $content);
-                    $this->cache->load($key);
-                }
-
-                if (!class_exists($mainCls, false)) {
-                    /* Last line of defense if either $this->bcWriteCacheFile was used,
-                     * $this->cache is implemented as a no-op or we have a race condition
-                     * where the cache was cleared between the above calls to write to and load from
-                     * the cache.
-                     */
-                    eval('?>'.$content);
-                }
-            }
-
-            if (!class_exists($cls, false)) {
-                throw new Twig_Error_Runtime(sprintf('Failed to load Twig template "%s", index "%s": cache is corrupted.', $name, $index), -1, $source);
-            }
-        }
-
-        if (!$this->runtimeInitialized) {
-            $this->initRuntime();
-        }
-
-        if (isset($this->loading[$cls])) {
-            throw new Twig_Error_Runtime(sprintf('Circular reference detected for Twig template "%s", path: %s.', $name, implode(' -> ', array_merge($this->loading, array($name)))));
-        }
-
-        $this->loading[$cls] = $name;
-
-        try {
-            $this->loadedTemplates[$cls] = new $cls($this);
-            unset($this->loading[$cls]);
-        } catch (\Exception $e) {
-            unset($this->loading[$cls]);
-
-            throw $e;
-        }
-
-        return $this->loadedTemplates[$cls];
-    }
-
-    /**
-     * Creates a template from source.
-     *
-     * This method should not be used as a generic way to load templates.
-     *
-     * @param string $template The template name
-     *
-     * @return Twig_Template A template instance representing the given template name
-     *
-     * @throws Twig_Error_Loader When the template cannot be found
-     * @throws Twig_Error_Syntax When an error occurred during compilation
-     */
-    public function createTemplate($template)
-    {
-        $name = sprintf('__string_template__%s', hash('sha256', $template, false));
-
-        $loader = new Twig_Loader_Chain(array(
-            new Twig_Loader_Array(array($name => $template)),
-            $current = $this->getLoader(),
-        ));
-
-        $this->setLoader($loader);
-        try {
-            $template = $this->loadTemplate($name);
-        } catch (Exception $e) {
-            $this->setLoader($current);
-
-            throw $e;
-        } catch (Throwable $e) {
-            $this->setLoader($current);
-
-            throw $e;
-        }
-        $this->setLoader($current);
-
-        return $template;
-    }
-
-    /**
-     * Returns true if the template is still fresh.
-     *
-     * Besides checking the loader for freshness information,
-     * this method also checks if the enabled extensions have
-     * not changed.
-     *
-     * @param string $name The template name
-     * @param int    $time The last modification time of the cached template
-     *
-     * @return bool true if the template is fresh, false otherwise
-     */
-    public function isTemplateFresh($name, $time)
-    {
-        if (0 === $this->lastModifiedExtension) {
-            foreach ($this->extensions as $extension) {
-                $r = new ReflectionObject($extension);
-                if (file_exists($r->getFileName()) && ($extensionTime = filemtime($r->getFileName())) > $this->lastModifiedExtension) {
-                    $this->lastModifiedExtension = $extensionTime;
-                }
-            }
-        }
-
-        return $this->lastModifiedExtension <= $time && $this->getLoader()->isFresh($name, $time);
-    }
-
-    /**
-     * Tries to load a template consecutively from an array.
-     *
-     * Similar to loadTemplate() but it also accepts instances of Twig_Template and
-     * Twig_TemplateWrapper, and an array of templates where each is tried to be loaded.
-     *
-     * @param string|Twig_Template|Twig_TemplateWrapper|array $names A template or an array of templates to try consecutively
-     *
-     * @return Twig_Template|Twig_TemplateWrapper
-     *
-     * @throws Twig_Error_Loader When none of the templates can be found
-     * @throws Twig_Error_Syntax When an error occurred during compilation
-     */
-    public function resolveTemplate($names)
-    {
-        if (!is_array($names)) {
-            $names = array($names);
-        }
-
-        foreach ($names as $name) {
-            if ($name instanceof Twig_Template) {
-                return $name;
-            }
-
-            if ($name instanceof Twig_TemplateWrapper) {
-                return $name;
-            }
-
-            try {
-                return $this->loadTemplate($name);
-            } catch (Twig_Error_Loader $e) {
-            }
-        }
-
-        if (1 === count($names)) {
-            throw $e;
-        }
-
-        throw new Twig_Error_Loader(sprintf('Unable to find one of the following templates: "%s".', implode('", "', $names)));
-    }
-
-    /**
-     * Clears the internal template cache.
-     *
-     * @deprecated since 1.18.3 (to be removed in 2.0)
-     */
-    public function clearTemplateCache()
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.18.3 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        $this->loadedTemplates = array();
-    }
-
-    /**
-     * Clears the template cache files on the filesystem.
-     *
-     * @deprecated since 1.22 (to be removed in 2.0)
-     */
-    public function clearCacheFiles()
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        if (is_string($this->originalCache)) {
-            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->originalCache), RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
-                if ($file->isFile()) {
-                    @unlink($file->getPathname());
-                }
-            }
-        }
-    }
-
-    /**
-     * Gets the Lexer instance.
-     *
-     * @return Twig_LexerInterface
-     *
-     * @deprecated since 1.25 (to be removed in 2.0)
-     */
-    public function getLexer()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);
-
-        if (null === $this->lexer) {
-            $this->lexer = new Twig_Lexer($this);
-        }
-
-        return $this->lexer;
-    }
-
-    public function setLexer(Twig_LexerInterface $lexer)
-    {
-        $this->lexer = $lexer;
-    }
-
-    /**
-     * Tokenizes a source code.
-     *
-     * @param string|Twig_Source $source The template source code
-     * @param string             $name   The template name (deprecated)
-     *
-     * @return Twig_TokenStream
-     *
-     * @throws Twig_Error_Syntax When the code is syntactically wrong
-     */
-    public function tokenize($source, $name = null)
-    {
-        if (!$source instanceof Twig_Source) {
-            @trigger_error(sprintf('Passing a string as the $source argument of %s() is deprecated since version 1.27. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
-            $source = new Twig_Source($source, $name);
-        }
-
-        if (null === $this->lexer) {
-            $this->lexer = new Twig_Lexer($this);
-        }
-
-        return $this->lexer->tokenize($source);
-    }
-
-    /**
-     * Gets the Parser instance.
-     *
-     * @return Twig_ParserInterface
-     *
-     * @deprecated since 1.25 (to be removed in 2.0)
-     */
-    public function getParser()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);
-
-        if (null === $this->parser) {
-            $this->parser = new Twig_Parser($this);
-        }
-
-        return $this->parser;
-    }
-
-    public function setParser(Twig_ParserInterface $parser)
-    {
-        $this->parser = $parser;
-    }
-
-    /**
-     * Converts a token stream to a node tree.
-     *
-     * @return Twig_Node_Module
-     *
-     * @throws Twig_Error_Syntax When the token stream is syntactically or semantically wrong
-     */
-    public function parse(Twig_TokenStream $stream)
-    {
-        if (null === $this->parser) {
-            $this->parser = new Twig_Parser($this);
-        }
-
-        return $this->parser->parse($stream);
-    }
-
-    /**
-     * Gets the Compiler instance.
-     *
-     * @return Twig_CompilerInterface
-     *
-     * @deprecated since 1.25 (to be removed in 2.0)
-     */
-    public function getCompiler()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);
-
-        if (null === $this->compiler) {
-            $this->compiler = new Twig_Compiler($this);
-        }
-
-        return $this->compiler;
-    }
-
-    public function setCompiler(Twig_CompilerInterface $compiler)
-    {
-        $this->compiler = $compiler;
-    }
-
-    /**
-     * Compiles a node and returns the PHP code.
-     *
-     * @return string The compiled PHP source code
-     */
-    public function compile(Twig_NodeInterface $node)
-    {
-        if (null === $this->compiler) {
-            $this->compiler = new Twig_Compiler($this);
-        }
-
-        return $this->compiler->compile($node)->getSource();
-    }
-
-    /**
-     * Compiles a template source code.
-     *
-     * @param string|Twig_Source $source The template source code
-     * @param string             $name   The template name (deprecated)
-     *
-     * @return string The compiled PHP source code
-     *
-     * @throws Twig_Error_Syntax When there was an error during tokenizing, parsing or compiling
-     */
-    public function compileSource($source, $name = null)
-    {
-        if (!$source instanceof Twig_Source) {
-            @trigger_error(sprintf('Passing a string as the $source argument of %s() is deprecated since version 1.27. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
-            $source = new Twig_Source($source, $name);
-        }
-
-        try {
-            return $this->compile($this->parse($this->tokenize($source)));
-        } catch (Twig_Error $e) {
-            $e->setSourceContext($source);
-            throw $e;
-        } catch (Exception $e) {
-            throw new Twig_Error_Syntax(sprintf('An exception has been thrown during the compilation of a template ("%s").', $e->getMessage()), -1, $source, $e);
-        }
-    }
-
-    public function setLoader(Twig_LoaderInterface $loader)
-    {
-        if (!$loader instanceof Twig_SourceContextLoaderInterface && 0 !== strpos(get_class($loader), 'Mock_')) {
-            @trigger_error(sprintf('Twig loader "%s" should implement Twig_SourceContextLoaderInterface since version 1.27.', get_class($loader)), E_USER_DEPRECATED);
-        }
-
-        $this->loader = $loader;
-    }
-
-    /**
-     * Gets the Loader instance.
-     *
-     * @return Twig_LoaderInterface
-     */
-    public function getLoader()
-    {
-        if (null === $this->loader) {
-            throw new LogicException('You must set a loader first.');
-        }
-
-        return $this->loader;
-    }
-
-    /**
-     * Sets the default template charset.
-     *
-     * @param string $charset The default charset
-     */
-    public function setCharset($charset)
-    {
-        $this->charset = strtoupper($charset);
-    }
-
-    /**
-     * Gets the default template charset.
-     *
-     * @return string The default charset
-     */
-    public function getCharset()
-    {
-        return $this->charset;
-    }
-
-    /**
-     * Initializes the runtime environment.
-     *
-     * @deprecated since 1.23 (to be removed in 2.0)
-     */
-    public function initRuntime()
-    {
-        $this->runtimeInitialized = true;
-
-        foreach ($this->getExtensions() as $name => $extension) {
-            if (!$extension instanceof Twig_Extension_InitRuntimeInterface) {
-                $m = new ReflectionMethod($extension, 'initRuntime');
-
-                if ('Twig_Extension' !== $m->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Defining the initRuntime() method in the "%s" extension is deprecated since version 1.23. Use the `needs_environment` option to get the Twig_Environment instance in filters, functions, or tests; or explicitly implement Twig_Extension_InitRuntimeInterface if needed (not recommended).', $name), E_USER_DEPRECATED);
-                }
-            }
-
-            $extension->initRuntime($this);
-        }
-    }
-
-    /**
-     * Returns true if the given extension is registered.
-     *
-     * @param string $class The extension class name
-     *
-     * @return bool Whether the extension is registered or not
-     */
-    public function hasExtension($class)
-    {
-        $class = ltrim($class, '\\');
-        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
-            // For BC/FC with namespaced aliases
-            $class = new ReflectionClass($class);
-            $class = $class->name;
-        }
-
-        if (isset($this->extensions[$class])) {
-            if ($class !== get_class($this->extensions[$class])) {
-                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
-            }
-
-            return true;
-        }
-
-        return isset($this->extensionsByClass[$class]);
-    }
-
-    /**
-     * Adds a runtime loader.
-     */
-    public function addRuntimeLoader(Twig_RuntimeLoaderInterface $loader)
-    {
-        $this->runtimeLoaders[] = $loader;
-    }
-
-    /**
-     * Gets an extension by class name.
-     *
-     * @param string $class The extension class name
-     *
-     * @return Twig_ExtensionInterface
-     */
-    public function getExtension($class)
-    {
-        $class = ltrim($class, '\\');
-        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
-            // For BC/FC with namespaced aliases
-            $class = new ReflectionClass($class);
-            $class = $class->name;
-        }
-
-        if (isset($this->extensions[$class])) {
-            if ($class !== get_class($this->extensions[$class])) {
-                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
-            }
-
-            return $this->extensions[$class];
-        }
-
-        if (!isset($this->extensionsByClass[$class])) {
-            throw new Twig_Error_Runtime(sprintf('The "%s" extension is not enabled.', $class));
-        }
-
-        return $this->extensionsByClass[$class];
-    }
-
-    /**
-     * Returns the runtime implementation of a Twig element (filter/function/test).
-     *
-     * @param string $class A runtime class name
-     *
-     * @return object The runtime implementation
-     *
-     * @throws Twig_Error_Runtime When the template cannot be found
-     */
-    public function getRuntime($class)
-    {
-        if (isset($this->runtimes[$class])) {
-            return $this->runtimes[$class];
-        }
-
-        foreach ($this->runtimeLoaders as $loader) {
-            if (null !== $runtime = $loader->load($class)) {
-                return $this->runtimes[$class] = $runtime;
-            }
-        }
-
-        throw new Twig_Error_Runtime(sprintf('Unable to load the "%s" runtime.', $class));
-    }
-
-    public function addExtension(Twig_ExtensionInterface $extension)
-    {
-        if ($this->extensionInitialized) {
-            throw new LogicException(sprintf('Unable to register extension "%s" as extensions have already been initialized.', $extension->getName()));
-        }
-
-        $class = get_class($extension);
-        if ($class !== $extension->getName()) {
-            if (isset($this->extensions[$extension->getName()])) {
-                unset($this->extensions[$extension->getName()], $this->extensionsByClass[$class]);
-                @trigger_error(sprintf('The possibility to register the same extension twice ("%s") is deprecated since version 1.23 and will be removed in Twig 2.0. Use proper PHP inheritance instead.', $extension->getName()), E_USER_DEPRECATED);
-            }
-        }
-
-        $this->lastModifiedExtension = 0;
-        $this->extensionsByClass[$class] = $extension;
-        $this->extensions[$extension->getName()] = $extension;
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Removes an extension by name.
-     *
-     * This method is deprecated and you should not use it.
-     *
-     * @param string $name The extension name
-     *
-     * @deprecated since 1.12 (to be removed in 2.0)
-     */
-    public function removeExtension($name)
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.12 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        if ($this->extensionInitialized) {
-            throw new LogicException(sprintf('Unable to remove extension "%s" as extensions have already been initialized.', $name));
-        }
-
-        $class = ltrim($name, '\\');
-        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
-            // For BC/FC with namespaced aliases
-            $class = new ReflectionClass($class);
-            $class = $class->name;
-        }
-
-        if (isset($this->extensions[$class])) {
-            if ($class !== get_class($this->extensions[$class])) {
-                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
-            }
-
-            unset($this->extensions[$class]);
-        }
-
-        unset($this->extensions[$class]);
-        $this->updateOptionsHash();
-    }
-
-    /**
-     * Registers an array of extensions.
-     *
-     * @param array $extensions An array of extensions
-     */
-    public function setExtensions(array $extensions)
-    {
-        foreach ($extensions as $extension) {
-            $this->addExtension($extension);
-        }
-    }
-
-    /**
-     * Returns all registered extensions.
-     *
-     * @return Twig_ExtensionInterface[] An array of extensions (keys are for internal usage only and should not be relied on)
-     */
-    public function getExtensions()
-    {
-        return $this->extensions;
-    }
-
-    public function addTokenParser(Twig_TokenParserInterface $parser)
-    {
-        if ($this->extensionInitialized) {
-            throw new LogicException('Unable to add a token parser as extensions have already been initialized.');
-        }
-
-        $this->staging->addTokenParser($parser);
-    }
-
-    /**
-     * Gets the registered Token Parsers.
-     *
-     * @return Twig_TokenParserBrokerInterface
-     *
-     * @internal
-     */
-    public function getTokenParsers()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->parsers;
-    }
-
-    /**
-     * Gets registered tags.
-     *
-     * Be warned that this method cannot return tags defined by Twig_TokenParserBrokerInterface classes.
-     *
-     * @return Twig_TokenParserInterface[]
-     *
-     * @internal
-     */
-    public function getTags()
-    {
-        $tags = array();
-        foreach ($this->getTokenParsers()->getParsers() as $parser) {
-            if ($parser instanceof Twig_TokenParserInterface) {
-                $tags[$parser->getTag()] = $parser;
-            }
-        }
-
-        return $tags;
-    }
-
-    public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
-    {
-        if ($this->extensionInitialized) {
-            throw new LogicException('Unable to add a node visitor as extensions have already been initialized.');
-        }
-
-        $this->staging->addNodeVisitor($visitor);
-    }
-
-    /**
-     * Gets the registered Node Visitors.
-     *
-     * @return Twig_NodeVisitorInterface[]
-     *
-     * @internal
-     */
-    public function getNodeVisitors()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->visitors;
-    }
-
-    /**
-     * Registers a Filter.
-     *
-     * @param string|Twig_SimpleFilter               $name   The filter name or a Twig_SimpleFilter instance
-     * @param Twig_FilterInterface|Twig_SimpleFilter $filter
-     */
-    public function addFilter($name, $filter = null)
-    {
-        if (!$name instanceof Twig_SimpleFilter && !($filter instanceof Twig_SimpleFilter || $filter instanceof Twig_FilterInterface)) {
-            throw new LogicException('A filter must be an instance of Twig_FilterInterface or Twig_SimpleFilter.');
-        }
-
-        if ($name instanceof Twig_SimpleFilter) {
-            $filter = $name;
-            $name = $filter->getName();
-        } else {
-            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleFilter" instead when defining filter "%s".', __METHOD__, $name), E_USER_DEPRECATED);
-        }
-
-        if ($this->extensionInitialized) {
-            throw new LogicException(sprintf('Unable to add filter "%s" as extensions have already been initialized.', $name));
-        }
-
-        $this->staging->addFilter($name, $filter);
-    }
-
-    /**
-     * Get a filter by name.
-     *
-     * Subclasses may override this method and load filters differently;
-     * so no list of filters is available.
-     *
-     * @param string $name The filter name
-     *
-     * @return Twig_Filter|false A Twig_Filter instance or false if the filter does not exist
-     *
-     * @internal
-     */
-    public function getFilter($name)
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        if (isset($this->filters[$name])) {
-            return $this->filters[$name];
-        }
-
-        foreach ($this->filters as $pattern => $filter) {
-            $pattern = str_replace('\\*', '(.*?)', preg_quote($pattern, '#'), $count);
-
-            if ($count) {
-                if (preg_match('#^'.$pattern.'$#', $name, $matches)) {
-                    array_shift($matches);
-                    $filter->setArguments($matches);
-
-                    return $filter;
-                }
-            }
-        }
-
-        foreach ($this->filterCallbacks as $callback) {
-            if (false !== $filter = call_user_func($callback, $name)) {
-                return $filter;
-            }
-        }
-
-        return false;
-    }
-
-    public function registerUndefinedFilterCallback($callable)
-    {
-        $this->filterCallbacks[] = $callable;
-    }
-
-    /**
-     * Gets the registered Filters.
-     *
-     * Be warned that this method cannot return filters defined with registerUndefinedFilterCallback.
-     *
-     * @return Twig_FilterInterface[]
-     *
-     * @see registerUndefinedFilterCallback
-     *
-     * @internal
-     */
-    public function getFilters()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->filters;
-    }
-
-    /**
-     * Registers a Test.
-     *
-     * @param string|Twig_SimpleTest             $name The test name or a Twig_SimpleTest instance
-     * @param Twig_TestInterface|Twig_SimpleTest $test A Twig_TestInterface instance or a Twig_SimpleTest instance
-     */
-    public function addTest($name, $test = null)
-    {
-        if (!$name instanceof Twig_SimpleTest && !($test instanceof Twig_SimpleTest || $test instanceof Twig_TestInterface)) {
-            throw new LogicException('A test must be an instance of Twig_TestInterface or Twig_SimpleTest.');
-        }
-
-        if ($name instanceof Twig_SimpleTest) {
-            $test = $name;
-            $name = $test->getName();
-        } else {
-            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleTest" instead when defining test "%s".', __METHOD__, $name), E_USER_DEPRECATED);
-        }
-
-        if ($this->extensionInitialized) {
-            throw new LogicException(sprintf('Unable to add test "%s" as extensions have already been initialized.', $name));
-        }
-
-        $this->staging->addTest($name, $test);
-    }
-
-    /**
-     * Gets the registered Tests.
-     *
-     * @return Twig_TestInterface[]
-     *
-     * @internal
-     */
-    public function getTests()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->tests;
-    }
-
-    /**
-     * Gets a test by name.
-     *
-     * @param string $name The test name
-     *
-     * @return Twig_Test|false A Twig_Test instance or false if the test does not exist
-     *
-     * @internal
-     */
-    public function getTest($name)
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        if (isset($this->tests[$name])) {
-            return $this->tests[$name];
-        }
-
-        return false;
-    }
-
-    /**
-     * Registers a Function.
-     *
-     * @param string|Twig_SimpleFunction                 $name     The function name or a Twig_SimpleFunction instance
-     * @param Twig_FunctionInterface|Twig_SimpleFunction $function
-     */
-    public function addFunction($name, $function = null)
-    {
-        if (!$name instanceof Twig_SimpleFunction && !($function instanceof Twig_SimpleFunction || $function instanceof Twig_FunctionInterface)) {
-            throw new LogicException('A function must be an instance of Twig_FunctionInterface or Twig_SimpleFunction.');
-        }
-
-        if ($name instanceof Twig_SimpleFunction) {
-            $function = $name;
-            $name = $function->getName();
-        } else {
-            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleFunction" instead when defining function "%s".', __METHOD__, $name), E_USER_DEPRECATED);
-        }
-
-        if ($this->extensionInitialized) {
-            throw new LogicException(sprintf('Unable to add function "%s" as extensions have already been initialized.', $name));
-        }
-
-        $this->staging->addFunction($name, $function);
-    }
-
-    /**
-     * Get a function by name.
-     *
-     * Subclasses may override this method and load functions differently;
-     * so no list of functions is available.
-     *
-     * @param string $name function name
-     *
-     * @return Twig_Function|false A Twig_Function instance or false if the function does not exist
-     *
-     * @internal
-     */
-    public function getFunction($name)
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        if (isset($this->functions[$name])) {
-            return $this->functions[$name];
-        }
-
-        foreach ($this->functions as $pattern => $function) {
-            $pattern = str_replace('\\*', '(.*?)', preg_quote($pattern, '#'), $count);
-
-            if ($count) {
-                if (preg_match('#^'.$pattern.'$#', $name, $matches)) {
-                    array_shift($matches);
-                    $function->setArguments($matches);
-
-                    return $function;
-                }
-            }
-        }
-
-        foreach ($this->functionCallbacks as $callback) {
-            if (false !== $function = call_user_func($callback, $name)) {
-                return $function;
-            }
-        }
-
-        return false;
-    }
-
-    public function registerUndefinedFunctionCallback($callable)
-    {
-        $this->functionCallbacks[] = $callable;
-    }
-
-    /**
-     * Gets registered functions.
-     *
-     * Be warned that this method cannot return functions defined with registerUndefinedFunctionCallback.
-     *
-     * @return Twig_FunctionInterface[]
-     *
-     * @see registerUndefinedFunctionCallback
-     *
-     * @internal
-     */
-    public function getFunctions()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->functions;
-    }
-
-    /**
-     * Registers a Global.
-     *
-     * New globals can be added before compiling or rendering a template;
-     * but after, you can only update existing globals.
-     *
-     * @param string $name  The global name
-     * @param mixed  $value The global value
-     */
-    public function addGlobal($name, $value)
-    {
-        if ($this->extensionInitialized || $this->runtimeInitialized) {
-            if (null === $this->globals) {
-                $this->globals = $this->initGlobals();
-            }
-
-            if (!array_key_exists($name, $this->globals)) {
-                // The deprecation notice must be turned into the following exception in Twig 2.0
-                @trigger_error(sprintf('Registering global variable "%s" at runtime or when the extensions have already been initialized is deprecated since version 1.21.', $name), E_USER_DEPRECATED);
-                //throw new LogicException(sprintf('Unable to add global "%s" as the runtime or the extensions have already been initialized.', $name));
-            }
-        }
-
-        if ($this->extensionInitialized || $this->runtimeInitialized) {
-            // update the value
-            $this->globals[$name] = $value;
-        } else {
-            $this->staging->addGlobal($name, $value);
-        }
-    }
-
-    /**
-     * Gets the registered Globals.
-     *
-     * @return array An array of globals
-     *
-     * @internal
-     */
-    public function getGlobals()
-    {
-        if (!$this->runtimeInitialized && !$this->extensionInitialized) {
-            return $this->initGlobals();
-        }
-
-        if (null === $this->globals) {
-            $this->globals = $this->initGlobals();
-        }
-
-        return $this->globals;
-    }
-
-    /**
-     * Merges a context with the defined globals.
-     *
-     * @param array $context An array representing the context
-     *
-     * @return array The context merged with the globals
-     */
-    public function mergeGlobals(array $context)
-    {
-        // we don't use array_merge as the context being generally
-        // bigger than globals, this code is faster.
-        foreach ($this->getGlobals() as $key => $value) {
-            if (!array_key_exists($key, $context)) {
-                $context[$key] = $value;
-            }
-        }
-
-        return $context;
-    }
-
-    /**
-     * Gets the registered unary Operators.
-     *
-     * @return array An array of unary operators
-     *
-     * @internal
-     */
-    public function getUnaryOperators()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->unaryOperators;
-    }
-
-    /**
-     * Gets the registered binary Operators.
-     *
-     * @return array An array of binary operators
-     *
-     * @internal
-     */
-    public function getBinaryOperators()
-    {
-        if (!$this->extensionInitialized) {
-            $this->initExtensions();
-        }
-
-        return $this->binaryOperators;
-    }
-
-    /**
-     * @deprecated since 1.23 (to be removed in 2.0)
-     */
-    public function computeAlternatives($name, $items)
-    {
-        @trigger_error(sprintf('The %s method is deprecated since version 1.23 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        return Twig_Error_Syntax::computeAlternatives($name, $items);
-    }
-
-    /**
-     * @internal
-     */
-    protected function initGlobals()
-    {
-        $globals = array();
-        foreach ($this->extensions as $name => $extension) {
-            if (!$extension instanceof Twig_Extension_GlobalsInterface) {
-                $m = new ReflectionMethod($extension, 'getGlobals');
-
-                if ('Twig_Extension' !== $m->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Defining the getGlobals() method in the "%s" extension without explicitly implementing Twig_Extension_GlobalsInterface is deprecated since version 1.23.', $name), E_USER_DEPRECATED);
-                }
-            }
-
-            $extGlob = $extension->getGlobals();
-            if (!is_array($extGlob)) {
-                throw new UnexpectedValueException(sprintf('"%s::getGlobals()" must return an array of globals.', get_class($extension)));
-            }
-
-            $globals[] = $extGlob;
-        }
-
-        $globals[] = $this->staging->getGlobals();
-
-        return call_user_func_array('array_merge', $globals);
-    }
-
-    /**
-     * @internal
-     */
-    protected function initExtensions()
-    {
-        if ($this->extensionInitialized) {
-            return;
-        }
-
-        $this->parsers = new Twig_TokenParserBroker(array(), array(), false);
-        $this->filters = array();
-        $this->functions = array();
-        $this->tests = array();
-        $this->visitors = array();
-        $this->unaryOperators = array();
-        $this->binaryOperators = array();
-
-        foreach ($this->extensions as $extension) {
-            $this->initExtension($extension);
-        }
-        $this->initExtension($this->staging);
-        // Done at the end only, so that an exception during initialization does not mark the environment as initialized when catching the exception
-        $this->extensionInitialized = true;
-    }
-
-    /**
-     * @internal
-     */
-    protected function initExtension(Twig_ExtensionInterface $extension)
-    {
-        // filters
-        foreach ($extension->getFilters() as $name => $filter) {
-            if ($filter instanceof Twig_SimpleFilter) {
-                $name = $filter->getName();
-            } else {
-                @trigger_error(sprintf('Using an instance of "%s" for filter "%s" is deprecated since version 1.21. Use Twig_SimpleFilter instead.', get_class($filter), $name), E_USER_DEPRECATED);
-            }
-
-            $this->filters[$name] = $filter;
-        }
-
-        // functions
-        foreach ($extension->getFunctions() as $name => $function) {
-            if ($function instanceof Twig_SimpleFunction) {
-                $name = $function->getName();
-            } else {
-                @trigger_error(sprintf('Using an instance of "%s" for function "%s" is deprecated since version 1.21. Use Twig_SimpleFunction instead.', get_class($function), $name), E_USER_DEPRECATED);
-            }
-
-            $this->functions[$name] = $function;
-        }
-
-        // tests
-        foreach ($extension->getTests() as $name => $test) {
-            if ($test instanceof Twig_SimpleTest) {
-                $name = $test->getName();
-            } else {
-                @trigger_error(sprintf('Using an instance of "%s" for test "%s" is deprecated since version 1.21. Use Twig_SimpleTest instead.', get_class($test), $name), E_USER_DEPRECATED);
-            }
-
-            $this->tests[$name] = $test;
-        }
-
-        // token parsers
-        foreach ($extension->getTokenParsers() as $parser) {
-            if ($parser instanceof Twig_TokenParserInterface) {
-                $this->parsers->addTokenParser($parser);
-            } elseif ($parser instanceof Twig_TokenParserBrokerInterface) {
-                @trigger_error('Registering a Twig_TokenParserBrokerInterface instance is deprecated since version 1.21.', E_USER_DEPRECATED);
-
-                $this->parsers->addTokenParserBroker($parser);
-            } else {
-                throw new LogicException('getTokenParsers() must return an array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances.');
-            }
-        }
-
-        // node visitors
-        foreach ($extension->getNodeVisitors() as $visitor) {
-            $this->visitors[] = $visitor;
-        }
-
-        // operators
-        if ($operators = $extension->getOperators()) {
-            if (!is_array($operators)) {
-                throw new InvalidArgumentException(sprintf('"%s::getOperators()" must return an array with operators, got "%s".', get_class($extension), is_object($operators) ? get_class($operators) : gettype($operators).(is_resource($operators) ? '' : '#'.$operators)));
-            }
-
-            if (2 !== count($operators)) {
-                throw new InvalidArgumentException(sprintf('"%s::getOperators()" must return an array of 2 elements, got %d.', get_class($extension), count($operators)));
-            }
-
-            $this->unaryOperators = array_merge($this->unaryOperators, $operators[0]);
-            $this->binaryOperators = array_merge($this->binaryOperators, $operators[1]);
-        }
-    }
-
-    /**
-     * @deprecated since 1.22 (to be removed in 2.0)
-     */
-    protected function writeCacheFile($file, $content)
-    {
-        $this->cache->write($file, $content);
-    }
-
-    private function updateOptionsHash()
-    {
-        $hashParts = array_merge(
-            array_keys($this->extensions),
-            array(
-                (int) function_exists('twig_template_get_attributes'),
-                PHP_MAJOR_VERSION,
-                PHP_MINOR_VERSION,
-                self::VERSION,
-                (int) $this->debug,
-                $this->baseTemplateClass,
-                (int) $this->strictVariables,
-            )
-        );
-        $this->optionsHash = implode(':', $hashParts);
-    }
-}
-
-class_alias('Twig_Environment', 'Twig\Environment', false);
diff --git a/inc/lib/Twig/Error.php b/inc/lib/Twig/Error.php
deleted file mode 100644
index 787e0d09..00000000
--- a/inc/lib/Twig/Error.php
+++ /dev/null
@@ -1,363 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig base exception.
- *
- * This exception class and its children must only be used when
- * an error occurs during the loading of a template, when a syntax error
- * is detected in a template, or when rendering a template. Other
- * errors must use regular PHP exception classes (like when the template
- * cache directory is not writable for instance).
- *
- * To help debugging template issues, this class tracks the original template
- * name and line where the error occurred.
- *
- * Whenever possible, you must set these information (original template name
- * and line number) yourself by passing them to the constructor. If some or all
- * these information are not available from where you throw the exception, then
- * this class will guess them automatically (when the line number is set to -1
- * and/or the name is set to null). As this is a costly operation, this
- * can be disabled by passing false for both the name and the line number
- * when creating a new instance of this class.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Error extends Exception
-{
-    protected $lineno;
-    // to be renamed to name in 2.0
-    protected $filename;
-    protected $rawMessage;
-    protected $previous;
-
-    private $sourcePath;
-    private $sourceCode;
-
-    /**
-     * Constructor.
-     *
-     * Set both the line number and the name to false to
-     * disable automatic guessing of the original template name
-     * and line number.
-     *
-     * Set the line number to -1 to enable its automatic guessing.
-     * Set the name to null to enable its automatic guessing.
-     *
-     * By default, automatic guessing is enabled.
-     *
-     * @param string                  $message  The error message
-     * @param int                     $lineno   The template line where the error occurred
-     * @param Twig_Source|string|null $source   The source context where the error occurred
-     * @param Exception               $previous The previous exception
-     */
-    public function __construct($message, $lineno = -1, $source = null, Exception $previous = null)
-    {
-        if (null === $source) {
-            $name = null;
-        } elseif (!$source instanceof Twig_Source) {
-            // for compat with the Twig C ext., passing the template name as string is accepted
-            $name = $source;
-        } else {
-            $name = $source->getName();
-            $this->sourceCode = $source->getCode();
-            $this->sourcePath = $source->getPath();
-        }
-        if (PHP_VERSION_ID < 50300) {
-            $this->previous = $previous;
-            parent::__construct('');
-        } else {
-            parent::__construct('', 0, $previous);
-        }
-
-        $this->lineno = $lineno;
-        $this->filename = $name;
-
-        if (-1 === $lineno || null === $name || null === $this->sourcePath) {
-            $this->guessTemplateInfo();
-        }
-
-        $this->rawMessage = $message;
-
-        $this->updateRepr();
-    }
-
-    /**
-     * Gets the raw message.
-     *
-     * @return string The raw message
-     */
-    public function getRawMessage()
-    {
-        return $this->rawMessage;
-    }
-
-    /**
-     * Gets the logical name where the error occurred.
-     *
-     * @return string The name
-     *
-     * @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead.
-     */
-    public function getTemplateFile()
-    {
-        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->filename;
-    }
-
-    /**
-     * Sets the logical name where the error occurred.
-     *
-     * @param string $name The name
-     *
-     * @deprecated since 1.27 (to be removed in 2.0). Use setSourceContext() instead.
-     */
-    public function setTemplateFile($name)
-    {
-        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use setSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        $this->filename = $name;
-
-        $this->updateRepr();
-    }
-
-    /**
-     * Gets the logical name where the error occurred.
-     *
-     * @return string The name
-     *
-     * @deprecated since 1.29 (to be removed in 2.0). Use getSourceContext() instead.
-     */
-    public function getTemplateName()
-    {
-        @trigger_error(sprintf('The "%s" method is deprecated since version 1.29 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->filename;
-    }
-
-    /**
-     * Sets the logical name where the error occurred.
-     *
-     * @param string $name The name
-     *
-     * @deprecated since 1.29 (to be removed in 2.0). Use setSourceContext() instead.
-     */
-    public function setTemplateName($name)
-    {
-        @trigger_error(sprintf('The "%s" method is deprecated since version 1.29 and will be removed in 2.0. Use setSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        $this->filename = $name;
-        $this->sourceCode = $this->sourcePath = null;
-
-        $this->updateRepr();
-    }
-
-    /**
-     * Gets the template line where the error occurred.
-     *
-     * @return int The template line
-     */
-    public function getTemplateLine()
-    {
-        return $this->lineno;
-    }
-
-    /**
-     * Sets the template line where the error occurred.
-     *
-     * @param int $lineno The template line
-     */
-    public function setTemplateLine($lineno)
-    {
-        $this->lineno = $lineno;
-
-        $this->updateRepr();
-    }
-
-    /**
-     * Gets the source context of the Twig template where the error occurred.
-     *
-     * @return Twig_Source|null
-     */
-    public function getSourceContext()
-    {
-        return $this->filename ? new Twig_Source($this->sourceCode, $this->filename, $this->sourcePath) : null;
-    }
-
-    /**
-     * Sets the source context of the Twig template where the error occurred.
-     */
-    public function setSourceContext(Twig_Source $source = null)
-    {
-        if (null === $source) {
-            $this->sourceCode = $this->filename = $this->sourcePath = null;
-        } else {
-            $this->sourceCode = $source->getCode();
-            $this->filename = $source->getName();
-            $this->sourcePath = $source->getPath();
-        }
-
-        $this->updateRepr();
-    }
-
-    public function guess()
-    {
-        $this->guessTemplateInfo();
-        $this->updateRepr();
-    }
-
-    /**
-     * For PHP < 5.3.0, provides access to the getPrevious() method.
-     *
-     * @param string $method    The method name
-     * @param array  $arguments The parameters to be passed to the method
-     *
-     * @return Exception The previous exception or null
-     *
-     * @throws BadMethodCallException
-     */
-    public function __call($method, $arguments)
-    {
-        if ('getprevious' == strtolower($method)) {
-            return $this->previous;
-        }
-
-        throw new BadMethodCallException(sprintf('Method "Twig_Error::%s()" does not exist.', $method));
-    }
-
-    public function appendMessage($rawMessage)
-    {
-        $this->rawMessage .= $rawMessage;
-        $this->updateRepr();
-    }
-
-    /**
-     * @internal
-     */
-    protected function updateRepr()
-    {
-        $this->message = $this->rawMessage;
-
-        if ($this->sourcePath && $this->lineno > 0) {
-            $this->file = $this->sourcePath;
-            $this->line = $this->lineno;
-
-            return;
-        }
-
-        $dot = false;
-        if ('.' === substr($this->message, -1)) {
-            $this->message = substr($this->message, 0, -1);
-            $dot = true;
-        }
-
-        $questionMark = false;
-        if ('?' === substr($this->message, -1)) {
-            $this->message = substr($this->message, 0, -1);
-            $questionMark = true;
-        }
-
-        if ($this->filename) {
-            if (is_string($this->filename) || (is_object($this->filename) && method_exists($this->filename, '__toString'))) {
-                $name = sprintf('"%s"', $this->filename);
-            } else {
-                $name = json_encode($this->filename);
-            }
-            $this->message .= sprintf(' in %s', $name);
-        }
-
-        if ($this->lineno && $this->lineno >= 0) {
-            $this->message .= sprintf(' at line %d', $this->lineno);
-        }
-
-        if ($dot) {
-            $this->message .= '.';
-        }
-
-        if ($questionMark) {
-            $this->message .= '?';
-        }
-    }
-
-    /**
-     * @internal
-     */
-    protected function guessTemplateInfo()
-    {
-        $template = null;
-        $templateClass = null;
-
-        if (PHP_VERSION_ID >= 50306) {
-            $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS | DEBUG_BACKTRACE_PROVIDE_OBJECT);
-        } else {
-            $backtrace = debug_backtrace();
-        }
-
-        foreach ($backtrace as $trace) {
-            if (isset($trace['object']) && $trace['object'] instanceof Twig_Template && 'Twig_Template' !== get_class($trace['object'])) {
-                $currentClass = get_class($trace['object']);
-                $isEmbedContainer = 0 === strpos($templateClass, $currentClass);
-                if (null === $this->filename || ($this->filename == $trace['object']->getTemplateName() && !$isEmbedContainer)) {
-                    $template = $trace['object'];
-                    $templateClass = get_class($trace['object']);
-                }
-            }
-        }
-
-        // update template name
-        if (null !== $template && null === $this->filename) {
-            $this->filename = $template->getTemplateName();
-        }
-
-        // update template path if any
-        if (null !== $template && null === $this->sourcePath) {
-            $src = $template->getSourceContext();
-            $this->sourceCode = $src->getCode();
-            $this->sourcePath = $src->getPath();
-        }
-
-        if (null === $template || $this->lineno > -1) {
-            return;
-        }
-
-        $r = new ReflectionObject($template);
-        $file = $r->getFileName();
-
-        $exceptions = array($e = $this);
-        while (($e instanceof self || method_exists($e, 'getPrevious')) && $e = $e->getPrevious()) {
-            $exceptions[] = $e;
-        }
-
-        while ($e = array_pop($exceptions)) {
-            $traces = $e->getTrace();
-            array_unshift($traces, array('file' => $e->getFile(), 'line' => $e->getLine()));
-
-            while ($trace = array_shift($traces)) {
-                if (!isset($trace['file']) || !isset($trace['line']) || $file != $trace['file']) {
-                    continue;
-                }
-
-                foreach ($template->getDebugInfo() as $codeLine => $templateLine) {
-                    if ($codeLine <= $trace['line']) {
-                        // update template line
-                        $this->lineno = $templateLine;
-
-                        return;
-                    }
-                }
-            }
-        }
-    }
-}
-
-class_alias('Twig_Error', 'Twig\Error\Error', false);
-class_exists('Twig_Source');
diff --git a/inc/lib/Twig/Error/Loader.php b/inc/lib/Twig/Error/Loader.php
deleted file mode 100644
index df566dd7..00000000
--- a/inc/lib/Twig/Error/Loader.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when an error occurs during template loading.
- *
- * Automatic template information guessing is always turned off as
- * if a template cannot be loaded, there is nothing to guess.
- * However, when a template is loaded from another one, then, we need
- * to find the current context and this is automatically done by
- * Twig_Template::displayWithErrorHandling().
- *
- * This strategy makes Twig_Environment::resolveTemplate() much faster.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Error_Loader extends Twig_Error
-{
-    public function __construct($message, $lineno = -1, $source = null, Exception $previous = null)
-    {
-        if (PHP_VERSION_ID < 50300) {
-            $this->previous = $previous;
-            Exception::__construct('');
-        } else {
-            Exception::__construct('', 0, $previous);
-        }
-        $this->appendMessage($message);
-        $this->setTemplateLine(false);
-    }
-}
-
-class_alias('Twig_Error_Loader', 'Twig\Error\LoaderError', false);
diff --git a/inc/lib/Twig/Error/Runtime.php b/inc/lib/Twig/Error/Runtime.php
deleted file mode 100644
index 3b24ad3a..00000000
--- a/inc/lib/Twig/Error/Runtime.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when an error occurs at runtime.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Error_Runtime extends Twig_Error
-{
-}
-
-class_alias('Twig_Error_Runtime', 'Twig\Error\RuntimeError', false);
diff --git a/inc/lib/Twig/Error/Syntax.php b/inc/lib/Twig/Error/Syntax.php
deleted file mode 100644
index 9d09f217..00000000
--- a/inc/lib/Twig/Error/Syntax.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a syntax error occurs during lexing or parsing of a template.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Error_Syntax extends Twig_Error
-{
-    /**
-     * Tweaks the error message to include suggestions.
-     *
-     * @param string $name  The original name of the item that does not exist
-     * @param array  $items An array of possible items
-     */
-    public function addSuggestions($name, array $items)
-    {
-        if (!$alternatives = self::computeAlternatives($name, $items)) {
-            return;
-        }
-
-        $this->appendMessage(sprintf(' Did you mean "%s"?', implode('", "', $alternatives)));
-    }
-
-    /**
-     * @internal
-     *
-     * To be merged with the addSuggestions() method in 2.0.
-     */
-    public static function computeAlternatives($name, $items)
-    {
-        $alternatives = array();
-        foreach ($items as $item) {
-            $lev = levenshtein($name, $item);
-            if ($lev <= strlen($name) / 3 || false !== strpos($item, $name)) {
-                $alternatives[$item] = $lev;
-            }
-        }
-        asort($alternatives);
-
-        return array_keys($alternatives);
-    }
-}
-
-class_alias('Twig_Error_Syntax', 'Twig\Error\SyntaxError', false);
diff --git a/inc/lib/Twig/ExistsLoaderInterface.php b/inc/lib/Twig/ExistsLoaderInterface.php
deleted file mode 100644
index 968cb21a..00000000
--- a/inc/lib/Twig/ExistsLoaderInterface.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Adds an exists() method for loaders.
- *
- * @author Florin Patan <florinpatan@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_ExistsLoaderInterface
-{
-    /**
-     * Check if we have the source code of a template, given its name.
-     *
-     * @param string $name The name of the template to check if we can load
-     *
-     * @return bool If the template source code is handled by this loader or not
-     */
-    public function exists($name);
-}
-
-class_alias('Twig_ExistsLoaderInterface', 'Twig\Loader\ExistsLoaderInterface', false);
diff --git a/inc/lib/Twig/ExpressionParser.php b/inc/lib/Twig/ExpressionParser.php
deleted file mode 100644
index fe4a9b4a..00000000
--- a/inc/lib/Twig/ExpressionParser.php
+++ /dev/null
@@ -1,744 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Parses expressions.
- *
- * This parser implements a "Precedence climbing" algorithm.
- *
- * @see https://www.engr.mun.ca/~theo/Misc/exp_parsing.htm
- * @see https://en.wikipedia.org/wiki/Operator-precedence_parser
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @internal
- */
-class Twig_ExpressionParser
-{
-    const OPERATOR_LEFT = 1;
-    const OPERATOR_RIGHT = 2;
-
-    protected $parser;
-    protected $unaryOperators;
-    protected $binaryOperators;
-
-    private $env;
-
-    public function __construct(Twig_Parser $parser, $env = null)
-    {
-        $this->parser = $parser;
-
-        if ($env instanceof Twig_Environment) {
-            $this->env = $env;
-            $this->unaryOperators = $env->getUnaryOperators();
-            $this->binaryOperators = $env->getBinaryOperators();
-        } else {
-            @trigger_error('Passing the operators as constructor arguments to '.__METHOD__.' is deprecated since version 1.27. Pass the environment instead.', E_USER_DEPRECATED);
-
-            $this->env = $parser->getEnvironment();
-            $this->unaryOperators = func_get_arg(1);
-            $this->binaryOperators = func_get_arg(2);
-        }
-    }
-
-    public function parseExpression($precedence = 0)
-    {
-        $expr = $this->getPrimary();
-        $token = $this->parser->getCurrentToken();
-        while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) {
-            $op = $this->binaryOperators[$token->getValue()];
-            $this->parser->getStream()->next();
-
-            if ('is not' === $token->getValue()) {
-                $expr = $this->parseNotTestExpression($expr);
-            } elseif ('is' === $token->getValue()) {
-                $expr = $this->parseTestExpression($expr);
-            } elseif (isset($op['callable'])) {
-                $expr = call_user_func($op['callable'], $this->parser, $expr);
-            } else {
-                $expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']);
-                $class = $op['class'];
-                $expr = new $class($expr, $expr1, $token->getLine());
-            }
-
-            $token = $this->parser->getCurrentToken();
-        }
-
-        if (0 === $precedence) {
-            return $this->parseConditionalExpression($expr);
-        }
-
-        return $expr;
-    }
-
-    protected function getPrimary()
-    {
-        $token = $this->parser->getCurrentToken();
-
-        if ($this->isUnary($token)) {
-            $operator = $this->unaryOperators[$token->getValue()];
-            $this->parser->getStream()->next();
-            $expr = $this->parseExpression($operator['precedence']);
-            $class = $operator['class'];
-
-            return $this->parsePostfixExpression(new $class($expr, $token->getLine()));
-        } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-            $this->parser->getStream()->next();
-            $expr = $this->parseExpression();
-            $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed');
-
-            return $this->parsePostfixExpression($expr);
-        }
-
-        return $this->parsePrimaryExpression();
-    }
-
-    protected function parseConditionalExpression($expr)
-    {
-        while ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, '?')) {
-            if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
-                $expr2 = $this->parseExpression();
-                if ($this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
-                    $expr3 = $this->parseExpression();
-                } else {
-                    $expr3 = new Twig_Node_Expression_Constant('', $this->parser->getCurrentToken()->getLine());
-                }
-            } else {
-                $expr2 = $expr;
-                $expr3 = $this->parseExpression();
-            }
-
-            $expr = new Twig_Node_Expression_Conditional($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine());
-        }
-
-        return $expr;
-    }
-
-    protected function isUnary(Twig_Token $token)
-    {
-        return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]);
-    }
-
-    protected function isBinary(Twig_Token $token)
-    {
-        return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]);
-    }
-
-    public function parsePrimaryExpression()
-    {
-        $token = $this->parser->getCurrentToken();
-        switch ($token->getType()) {
-            case Twig_Token::NAME_TYPE:
-                $this->parser->getStream()->next();
-                switch ($token->getValue()) {
-                    case 'true':
-                    case 'TRUE':
-                        $node = new Twig_Node_Expression_Constant(true, $token->getLine());
-                        break;
-
-                    case 'false':
-                    case 'FALSE':
-                        $node = new Twig_Node_Expression_Constant(false, $token->getLine());
-                        break;
-
-                    case 'none':
-                    case 'NONE':
-                    case 'null':
-                    case 'NULL':
-                        $node = new Twig_Node_Expression_Constant(null, $token->getLine());
-                        break;
-
-                    default:
-                        if ('(' === $this->parser->getCurrentToken()->getValue()) {
-                            $node = $this->getFunctionNode($token->getValue(), $token->getLine());
-                        } else {
-                            $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine());
-                        }
-                }
-                break;
-
-            case Twig_Token::NUMBER_TYPE:
-                $this->parser->getStream()->next();
-                $node = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
-                break;
-
-            case Twig_Token::STRING_TYPE:
-            case Twig_Token::INTERPOLATION_START_TYPE:
-                $node = $this->parseStringExpression();
-                break;
-
-            case Twig_Token::OPERATOR_TYPE:
-                if (preg_match(Twig_Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) {
-                    // in this context, string operators are variable names
-                    $this->parser->getStream()->next();
-                    $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine());
-                    break;
-                } elseif (isset($this->unaryOperators[$token->getValue()])) {
-                    $class = $this->unaryOperators[$token->getValue()]['class'];
-
-                    $ref = new ReflectionClass($class);
-                    $negClass = 'Twig_Node_Expression_Unary_Neg';
-                    $posClass = 'Twig_Node_Expression_Unary_Pos';
-                    if (!(in_array($ref->getName(), array($negClass, $posClass)) || $ref->isSubclassOf($negClass) || $ref->isSubclassOf($posClass))) {
-                        throw new Twig_Error_Syntax(sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
-                    }
-
-                    $this->parser->getStream()->next();
-                    $expr = $this->parsePrimaryExpression();
-
-                    $node = new $class($expr, $token->getLine());
-                    break;
-                }
-
-                // no break
-            default:
-                if ($token->test(Twig_Token::PUNCTUATION_TYPE, '[')) {
-                    $node = $this->parseArrayExpression();
-                } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '{')) {
-                    $node = $this->parseHashExpression();
-                } elseif ($token->test(Twig_Token::OPERATOR_TYPE, '=') && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) {
-                    throw new Twig_Error_Syntax(sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
-                } else {
-                    throw new Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
-                }
-        }
-
-        return $this->parsePostfixExpression($node);
-    }
-
-    public function parseStringExpression()
-    {
-        $stream = $this->parser->getStream();
-
-        $nodes = array();
-        // a string cannot be followed by another string in a single expression
-        $nextCanBeString = true;
-        while (true) {
-            if ($nextCanBeString && $token = $stream->nextIf(Twig_Token::STRING_TYPE)) {
-                $nodes[] = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
-                $nextCanBeString = false;
-            } elseif ($stream->nextIf(Twig_Token::INTERPOLATION_START_TYPE)) {
-                $nodes[] = $this->parseExpression();
-                $stream->expect(Twig_Token::INTERPOLATION_END_TYPE);
-                $nextCanBeString = true;
-            } else {
-                break;
-            }
-        }
-
-        $expr = array_shift($nodes);
-        foreach ($nodes as $node) {
-            $expr = new Twig_Node_Expression_Binary_Concat($expr, $node, $node->getTemplateLine());
-        }
-
-        return $expr;
-    }
-
-    public function parseArrayExpression()
-    {
-        $stream = $this->parser->getStream();
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected');
-
-        $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine());
-        $first = true;
-        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
-            if (!$first) {
-                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma');
-
-                // trailing ,?
-                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
-                    break;
-                }
-            }
-            $first = false;
-
-            $node->addElement($this->parseExpression());
-        }
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed');
-
-        return $node;
-    }
-
-    public function parseHashExpression()
-    {
-        $stream = $this->parser->getStream();
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '{', 'A hash element was expected');
-
-        $node = new Twig_Node_Expression_Array(array(), $stream->getCurrent()->getLine());
-        $first = true;
-        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
-            if (!$first) {
-                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma');
-
-                // trailing ,?
-                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
-                    break;
-                }
-            }
-            $first = false;
-
-            // a hash key can be:
-            //
-            //  * a number -- 12
-            //  * a string -- 'a'
-            //  * a name, which is equivalent to a string -- a
-            //  * an expression, which must be enclosed in parentheses -- (1 + 2)
-            if (($token = $stream->nextIf(Twig_Token::STRING_TYPE)) || ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) || $token = $stream->nextIf(Twig_Token::NUMBER_TYPE)) {
-                $key = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
-            } elseif ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-                $key = $this->parseExpression();
-            } else {
-                $current = $stream->getCurrent();
-
-                throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Twig_Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext());
-            }
-
-            $stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)');
-            $value = $this->parseExpression();
-
-            $node->addElement($value, $key);
-        }
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed');
-
-        return $node;
-    }
-
-    public function parsePostfixExpression($node)
-    {
-        while (true) {
-            $token = $this->parser->getCurrentToken();
-            if (Twig_Token::PUNCTUATION_TYPE == $token->getType()) {
-                if ('.' == $token->getValue() || '[' == $token->getValue()) {
-                    $node = $this->parseSubscriptExpression($node);
-                } elseif ('|' == $token->getValue()) {
-                    $node = $this->parseFilterExpression($node);
-                } else {
-                    break;
-                }
-            } else {
-                break;
-            }
-        }
-
-        return $node;
-    }
-
-    public function getFunctionNode($name, $line)
-    {
-        switch ($name) {
-            case 'parent':
-                $this->parseArguments();
-                if (!count($this->parser->getBlockStack())) {
-                    throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext());
-                }
-
-                if (!$this->parser->getParent() && !$this->parser->hasTraits()) {
-                    throw new Twig_Error_Syntax('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext());
-                }
-
-                return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line);
-            case 'block':
-                $args = $this->parseArguments();
-                if (count($args) < 1) {
-                    throw new Twig_Error_Syntax('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext());
-                }
-
-                return new Twig_Node_Expression_BlockReference($args->getNode(0), count($args) > 1 ? $args->getNode(1) : null, $line);
-            case 'attribute':
-                $args = $this->parseArguments();
-                if (count($args) < 2) {
-                    throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext());
-                }
-
-                return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : null, Twig_Template::ANY_CALL, $line);
-            default:
-                if (null !== $alias = $this->parser->getImportedSymbol('function', $name)) {
-                    $arguments = new Twig_Node_Expression_Array(array(), $line);
-                    foreach ($this->parseArguments() as $n) {
-                        $arguments->addElement($n);
-                    }
-
-                    $node = new Twig_Node_Expression_MethodCall($alias['node'], $alias['name'], $arguments, $line);
-                    $node->setAttribute('safe', true);
-
-                    return $node;
-                }
-
-                $args = $this->parseArguments(true);
-                $class = $this->getFunctionNodeClass($name, $line);
-
-                return new $class($name, $args, $line);
-        }
-    }
-
-    public function parseSubscriptExpression($node)
-    {
-        $stream = $this->parser->getStream();
-        $token = $stream->next();
-        $lineno = $token->getLine();
-        $arguments = new Twig_Node_Expression_Array(array(), $lineno);
-        $type = Twig_Template::ANY_CALL;
-        if ('.' == $token->getValue()) {
-            $token = $stream->next();
-            if (
-                Twig_Token::NAME_TYPE == $token->getType()
-                ||
-                Twig_Token::NUMBER_TYPE == $token->getType()
-                ||
-                (Twig_Token::OPERATOR_TYPE == $token->getType() && preg_match(Twig_Lexer::REGEX_NAME, $token->getValue()))
-            ) {
-                $arg = new Twig_Node_Expression_Constant($token->getValue(), $lineno);
-
-                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-                    $type = Twig_Template::METHOD_CALL;
-                    foreach ($this->parseArguments() as $n) {
-                        $arguments->addElement($n);
-                    }
-                }
-            } else {
-                throw new Twig_Error_Syntax('Expected name or number.', $lineno, $stream->getSourceContext());
-            }
-
-            if ($node instanceof Twig_Node_Expression_Name && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) {
-                if (!$arg instanceof Twig_Node_Expression_Constant) {
-                    throw new Twig_Error_Syntax(sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext());
-                }
-
-                $name = $arg->getAttribute('value');
-
-                if ($this->parser->isReservedMacroName($name)) {
-                    throw new Twig_Error_Syntax(sprintf('"%s" cannot be called as macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getSourceContext());
-                }
-
-                $node = new Twig_Node_Expression_MethodCall($node, 'get'.$name, $arguments, $lineno);
-                $node->setAttribute('safe', true);
-
-                return $node;
-            }
-        } else {
-            $type = Twig_Template::ARRAY_CALL;
-
-            // slice?
-            $slice = false;
-            if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ':')) {
-                $slice = true;
-                $arg = new Twig_Node_Expression_Constant(0, $token->getLine());
-            } else {
-                $arg = $this->parseExpression();
-            }
-
-            if ($stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ':')) {
-                $slice = true;
-            }
-
-            if ($slice) {
-                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
-                    $length = new Twig_Node_Expression_Constant(null, $token->getLine());
-                } else {
-                    $length = $this->parseExpression();
-                }
-
-                $class = $this->getFilterNodeClass('slice', $token->getLine());
-                $arguments = new Twig_Node(array($arg, $length));
-                $filter = new $class($node, new Twig_Node_Expression_Constant('slice', $token->getLine()), $arguments, $token->getLine());
-
-                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']');
-
-                return $filter;
-            }
-
-            $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']');
-        }
-
-        return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno);
-    }
-
-    public function parseFilterExpression($node)
-    {
-        $this->parser->getStream()->next();
-
-        return $this->parseFilterExpressionRaw($node);
-    }
-
-    public function parseFilterExpressionRaw($node, $tag = null)
-    {
-        while (true) {
-            $token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE);
-
-            $name = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
-            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-                $arguments = new Twig_Node();
-            } else {
-                $arguments = $this->parseArguments(true);
-            }
-
-            $class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine());
-
-            $node = new $class($node, $name, $arguments, $token->getLine(), $tag);
-
-            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '|')) {
-                break;
-            }
-
-            $this->parser->getStream()->next();
-        }
-
-        return $node;
-    }
-
-    /**
-     * Parses arguments.
-     *
-     * @param bool $namedArguments Whether to allow named arguments or not
-     * @param bool $definition     Whether we are parsing arguments for a function definition
-     *
-     * @return Twig_Node
-     *
-     * @throws Twig_Error_Syntax
-     */
-    public function parseArguments($namedArguments = false, $definition = false)
-    {
-        $args = array();
-        $stream = $this->parser->getStream();
-
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis');
-        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ')')) {
-            if (!empty($args)) {
-                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma');
-            }
-
-            if ($definition) {
-                $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'An argument must be a name');
-                $value = new Twig_Node_Expression_Name($token->getValue(), $this->parser->getCurrentToken()->getLine());
-            } else {
-                $value = $this->parseExpression();
-            }
-
-            $name = null;
-            if ($namedArguments && $token = $stream->nextIf(Twig_Token::OPERATOR_TYPE, '=')) {
-                if (!$value instanceof Twig_Node_Expression_Name) {
-                    throw new Twig_Error_Syntax(sprintf('A parameter name must be a string, "%s" given.', get_class($value)), $token->getLine(), $stream->getSourceContext());
-                }
-                $name = $value->getAttribute('name');
-
-                if ($definition) {
-                    $value = $this->parsePrimaryExpression();
-
-                    if (!$this->checkConstantExpression($value)) {
-                        throw new Twig_Error_Syntax(sprintf('A default value for an argument must be a constant (a boolean, a string, a number, or an array).'), $token->getLine(), $stream->getSourceContext());
-                    }
-                } else {
-                    $value = $this->parseExpression();
-                }
-            }
-
-            if ($definition) {
-                if (null === $name) {
-                    $name = $value->getAttribute('name');
-                    $value = new Twig_Node_Expression_Constant(null, $this->parser->getCurrentToken()->getLine());
-                }
-                $args[$name] = $value;
-            } else {
-                if (null === $name) {
-                    $args[] = $value;
-                } else {
-                    $args[$name] = $value;
-                }
-            }
-        }
-        $stream->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis');
-
-        return new Twig_Node($args);
-    }
-
-    public function parseAssignmentExpression()
-    {
-        $stream = $this->parser->getStream();
-        $targets = array();
-        while (true) {
-            $token = $stream->expect(Twig_Token::NAME_TYPE, null, 'Only variables can be assigned to');
-            $value = $token->getValue();
-            if (in_array(strtolower($value), array('true', 'false', 'none', 'null'))) {
-                throw new Twig_Error_Syntax(sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext());
-            }
-            $targets[] = new Twig_Node_Expression_AssignName($value, $token->getLine());
-
-            if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
-                break;
-            }
-        }
-
-        return new Twig_Node($targets);
-    }
-
-    public function parseMultitargetExpression()
-    {
-        $targets = array();
-        while (true) {
-            $targets[] = $this->parseExpression();
-            if (!$this->parser->getStream()->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
-                break;
-            }
-        }
-
-        return new Twig_Node($targets);
-    }
-
-    private function parseNotTestExpression(Twig_NodeInterface $node)
-    {
-        return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine());
-    }
-
-    private function parseTestExpression(Twig_NodeInterface $node)
-    {
-        $stream = $this->parser->getStream();
-        list($name, $test) = $this->getTest($node->getTemplateLine());
-
-        $class = $this->getTestNodeClass($test);
-        $arguments = null;
-        if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-            $arguments = $this->parser->getExpressionParser()->parseArguments(true);
-        }
-
-        return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine());
-    }
-
-    private function getTest($line)
-    {
-        $stream = $this->parser->getStream();
-        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-
-        if ($test = $this->env->getTest($name)) {
-            return array($name, $test);
-        }
-
-        if ($stream->test(Twig_Token::NAME_TYPE)) {
-            // try 2-words tests
-            $name = $name.' '.$this->parser->getCurrentToken()->getValue();
-
-            if ($test = $this->env->getTest($name)) {
-                $stream->next();
-
-                return array($name, $test);
-            }
-        }
-
-        $e = new Twig_Error_Syntax(sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext());
-        $e->addSuggestions($name, array_keys($this->env->getTests()));
-
-        throw $e;
-    }
-
-    private function getTestNodeClass($test)
-    {
-        if ($test instanceof Twig_SimpleTest && $test->isDeprecated()) {
-            $stream = $this->parser->getStream();
-            $message = sprintf('Twig Test "%s" is deprecated', $test->getName());
-            if (!is_bool($test->getDeprecatedVersion())) {
-                $message .= sprintf(' since version %s', $test->getDeprecatedVersion());
-            }
-            if ($test->getAlternative()) {
-                $message .= sprintf('. Use "%s" instead', $test->getAlternative());
-            }
-            $src = $stream->getSourceContext();
-            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $stream->getCurrent()->getLine());
-
-            @trigger_error($message, E_USER_DEPRECATED);
-        }
-
-        if ($test instanceof Twig_SimpleTest) {
-            return $test->getNodeClass();
-        }
-
-        return $test instanceof Twig_Test_Node ? $test->getClass() : 'Twig_Node_Expression_Test';
-    }
-
-    protected function getFunctionNodeClass($name, $line)
-    {
-        if (false === $function = $this->env->getFunction($name)) {
-            $e = new Twig_Error_Syntax(sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext());
-            $e->addSuggestions($name, array_keys($this->env->getFunctions()));
-
-            throw $e;
-        }
-
-        if ($function instanceof Twig_SimpleFunction && $function->isDeprecated()) {
-            $message = sprintf('Twig Function "%s" is deprecated', $function->getName());
-            if (!is_bool($function->getDeprecatedVersion())) {
-                $message .= sprintf(' since version %s', $function->getDeprecatedVersion());
-            }
-            if ($function->getAlternative()) {
-                $message .= sprintf('. Use "%s" instead', $function->getAlternative());
-            }
-            $src = $this->parser->getStream()->getSourceContext();
-            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);
-
-            @trigger_error($message, E_USER_DEPRECATED);
-        }
-
-        if ($function instanceof Twig_SimpleFunction) {
-            return $function->getNodeClass();
-        }
-
-        return $function instanceof Twig_Function_Node ? $function->getClass() : 'Twig_Node_Expression_Function';
-    }
-
-    protected function getFilterNodeClass($name, $line)
-    {
-        if (false === $filter = $this->env->getFilter($name)) {
-            $e = new Twig_Error_Syntax(sprintf('Unknown "%s" filter.', $name), $line, $this->parser->getStream()->getSourceContext());
-            $e->addSuggestions($name, array_keys($this->env->getFilters()));
-
-            throw $e;
-        }
-
-        if ($filter instanceof Twig_SimpleFilter && $filter->isDeprecated()) {
-            $message = sprintf('Twig Filter "%s" is deprecated', $filter->getName());
-            if (!is_bool($filter->getDeprecatedVersion())) {
-                $message .= sprintf(' since version %s', $filter->getDeprecatedVersion());
-            }
-            if ($filter->getAlternative()) {
-                $message .= sprintf('. Use "%s" instead', $filter->getAlternative());
-            }
-            $src = $this->parser->getStream()->getSourceContext();
-            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);
-
-            @trigger_error($message, E_USER_DEPRECATED);
-        }
-
-        if ($filter instanceof Twig_SimpleFilter) {
-            return $filter->getNodeClass();
-        }
-
-        return $filter instanceof Twig_Filter_Node ? $filter->getClass() : 'Twig_Node_Expression_Filter';
-    }
-
-    // checks that the node only contains "constant" elements
-    protected function checkConstantExpression(Twig_NodeInterface $node)
-    {
-        if (!($node instanceof Twig_Node_Expression_Constant || $node instanceof Twig_Node_Expression_Array
-            || $node instanceof Twig_Node_Expression_Unary_Neg || $node instanceof Twig_Node_Expression_Unary_Pos
-        )) {
-            return false;
-        }
-
-        foreach ($node as $n) {
-            if (!$this->checkConstantExpression($n)) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-}
-
-class_alias('Twig_ExpressionParser', 'Twig\ExpressionParser', false);
diff --git a/inc/lib/Twig/Extension.php b/inc/lib/Twig/Extension.php
deleted file mode 100644
index 38084495..00000000
--- a/inc/lib/Twig/Extension.php
+++ /dev/null
@@ -1,69 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-abstract class Twig_Extension implements Twig_ExtensionInterface
-{
-    /**
-     * @deprecated since 1.23 (to be removed in 2.0), implement Twig_Extension_InitRuntimeInterface instead
-     */
-    public function initRuntime(Twig_Environment $environment)
-    {
-    }
-
-    public function getTokenParsers()
-    {
-        return array();
-    }
-
-    public function getNodeVisitors()
-    {
-        return array();
-    }
-
-    public function getFilters()
-    {
-        return array();
-    }
-
-    public function getTests()
-    {
-        return array();
-    }
-
-    public function getFunctions()
-    {
-        return array();
-    }
-
-    public function getOperators()
-    {
-        return array();
-    }
-
-    /**
-     * @deprecated since 1.23 (to be removed in 2.0), implement Twig_Extension_GlobalsInterface instead
-     */
-    public function getGlobals()
-    {
-        return array();
-    }
-
-    /**
-     * @deprecated since 1.26 (to be removed in 2.0), not used anymore internally
-     */
-    public function getName()
-    {
-        return get_class($this);
-    }
-}
-
-class_alias('Twig_Extension', 'Twig\Extension\AbstractExtension', false);
-class_exists('Twig_Environment');
diff --git a/inc/lib/Twig/Extension/Core.php b/inc/lib/Twig/Extension/Core.php
deleted file mode 100644
index 6fa78e13..00000000
--- a/inc/lib/Twig/Extension/Core.php
+++ /dev/null
@@ -1,1642 +0,0 @@
-<?php
-
-if (!defined('ENT_SUBSTITUTE')) {
-    define('ENT_SUBSTITUTE', 8);
-}
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_Core extends Twig_Extension
-{
-    protected $dateFormats = array('F j, Y H:i', '%d days');
-    protected $numberFormat = array(0, '.', ',');
-    protected $timezone = null;
-    protected $escapers = array();
-
-    /**
-     * Defines a new escaper to be used via the escape filter.
-     *
-     * @param string   $strategy The strategy name that should be used as a strategy in the escape call
-     * @param callable $callable A valid PHP callable
-     */
-    public function setEscaper($strategy, $callable)
-    {
-        $this->escapers[$strategy] = $callable;
-    }
-
-    /**
-     * Gets all defined escapers.
-     *
-     * @return array An array of escapers
-     */
-    public function getEscapers()
-    {
-        return $this->escapers;
-    }
-
-    /**
-     * Sets the default format to be used by the date filter.
-     *
-     * @param string $format             The default date format string
-     * @param string $dateIntervalFormat The default date interval format string
-     */
-    public function setDateFormat($format = null, $dateIntervalFormat = null)
-    {
-        if (null !== $format) {
-            $this->dateFormats[0] = $format;
-        }
-
-        if (null !== $dateIntervalFormat) {
-            $this->dateFormats[1] = $dateIntervalFormat;
-        }
-    }
-
-    /**
-     * Gets the default format to be used by the date filter.
-     *
-     * @return array The default date format string and the default date interval format string
-     */
-    public function getDateFormat()
-    {
-        return $this->dateFormats;
-    }
-
-    /**
-     * Sets the default timezone to be used by the date filter.
-     *
-     * @param DateTimeZone|string $timezone The default timezone string or a DateTimeZone object
-     */
-    public function setTimezone($timezone)
-    {
-        $this->timezone = $timezone instanceof DateTimeZone ? $timezone : new DateTimeZone($timezone);
-    }
-
-    /**
-     * Gets the default timezone to be used by the date filter.
-     *
-     * @return DateTimeZone The default timezone currently in use
-     */
-    public function getTimezone()
-    {
-        if (null === $this->timezone) {
-            $this->timezone = new DateTimeZone(date_default_timezone_get());
-        }
-
-        return $this->timezone;
-    }
-
-    /**
-     * Sets the default format to be used by the number_format filter.
-     *
-     * @param int    $decimal      the number of decimal places to use
-     * @param string $decimalPoint the character(s) to use for the decimal point
-     * @param string $thousandSep  the character(s) to use for the thousands separator
-     */
-    public function setNumberFormat($decimal, $decimalPoint, $thousandSep)
-    {
-        $this->numberFormat = array($decimal, $decimalPoint, $thousandSep);
-    }
-
-    /**
-     * Get the default format used by the number_format filter.
-     *
-     * @return array The arguments for number_format()
-     */
-    public function getNumberFormat()
-    {
-        return $this->numberFormat;
-    }
-
-    public function getTokenParsers()
-    {
-        return array(
-            new Twig_TokenParser_For(),
-            new Twig_TokenParser_If(),
-            new Twig_TokenParser_Extends(),
-            new Twig_TokenParser_Include(),
-            new Twig_TokenParser_Block(),
-            new Twig_TokenParser_Use(),
-            new Twig_TokenParser_Filter(),
-            new Twig_TokenParser_Macro(),
-            new Twig_TokenParser_Import(),
-            new Twig_TokenParser_From(),
-            new Twig_TokenParser_Set(),
-            new Twig_TokenParser_Spaceless(),
-            new Twig_TokenParser_Flush(),
-            new Twig_TokenParser_Do(),
-            new Twig_TokenParser_Embed(),
-            new Twig_TokenParser_With(),
-        );
-    }
-
-    public function getFilters()
-    {
-        $filters = array(
-            // formatting filters
-            new Twig_SimpleFilter('date', 'twig_date_format_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('date_modify', 'twig_date_modify_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('format', 'sprintf'),
-            new Twig_SimpleFilter('replace', 'twig_replace_filter'),
-            new Twig_SimpleFilter('number_format', 'twig_number_format_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('abs', 'abs'),
-            new Twig_SimpleFilter('round', 'twig_round'),
-
-            // encoding
-            new Twig_SimpleFilter('url_encode', 'twig_urlencode_filter'),
-            new Twig_SimpleFilter('json_encode', 'twig_jsonencode_filter'),
-            new Twig_SimpleFilter('convert_encoding', 'twig_convert_encoding'),
-
-            // string filters
-            new Twig_SimpleFilter('title', 'twig_title_string_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('capitalize', 'twig_capitalize_string_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('upper', 'strtoupper'),
-            new Twig_SimpleFilter('lower', 'strtolower'),
-            new Twig_SimpleFilter('striptags', 'strip_tags'),
-            new Twig_SimpleFilter('trim', 'twig_trim_filter'),
-            new Twig_SimpleFilter('nl2br', 'nl2br', array('pre_escape' => 'html', 'is_safe' => array('html'))),
-
-            // array helpers
-            new Twig_SimpleFilter('join', 'twig_join_filter'),
-            new Twig_SimpleFilter('split', 'twig_split_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('sort', 'twig_sort_filter'),
-            new Twig_SimpleFilter('merge', 'twig_array_merge'),
-            new Twig_SimpleFilter('batch', 'twig_array_batch'),
-
-            // string/array filters
-            new Twig_SimpleFilter('reverse', 'twig_reverse_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('length', 'twig_length_filter', array('needs_environment' => true)),
-            new Twig_SimpleFilter('slice', 'twig_slice', array('needs_environment' => true)),
-            new Twig_SimpleFilter('first', 'twig_first', array('needs_environment' => true)),
-            new Twig_SimpleFilter('last', 'twig_last', array('needs_environment' => true)),
-
-            // iteration and runtime
-            new Twig_SimpleFilter('default', '_twig_default_filter', array('node_class' => 'Twig_Node_Expression_Filter_Default')),
-            new Twig_SimpleFilter('keys', 'twig_get_array_keys_filter'),
-
-            // escaping
-            new Twig_SimpleFilter('escape', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
-            new Twig_SimpleFilter('e', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
-        );
-
-        if (function_exists('mb_get_info')) {
-            $filters[] = new Twig_SimpleFilter('upper', 'twig_upper_filter', array('needs_environment' => true));
-            $filters[] = new Twig_SimpleFilter('lower', 'twig_lower_filter', array('needs_environment' => true));
-        }
-
-        return $filters;
-    }
-
-    public function getFunctions()
-    {
-        return array(
-            new Twig_SimpleFunction('max', 'max'),
-            new Twig_SimpleFunction('min', 'min'),
-            new Twig_SimpleFunction('range', 'range'),
-            new Twig_SimpleFunction('constant', 'twig_constant'),
-            new Twig_SimpleFunction('cycle', 'twig_cycle'),
-            new Twig_SimpleFunction('random', 'twig_random', array('needs_environment' => true)),
-            new Twig_SimpleFunction('date', 'twig_date_converter', array('needs_environment' => true)),
-            new Twig_SimpleFunction('include', 'twig_include', array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('all'))),
-            new Twig_SimpleFunction('source', 'twig_source', array('needs_environment' => true, 'is_safe' => array('all'))),
-        );
-    }
-
-    public function getTests()
-    {
-        return array(
-            new Twig_SimpleTest('even', null, array('node_class' => 'Twig_Node_Expression_Test_Even')),
-            new Twig_SimpleTest('odd', null, array('node_class' => 'Twig_Node_Expression_Test_Odd')),
-            new Twig_SimpleTest('defined', null, array('node_class' => 'Twig_Node_Expression_Test_Defined')),
-            new Twig_SimpleTest('sameas', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas', 'deprecated' => '1.21', 'alternative' => 'same as')),
-            new Twig_SimpleTest('same as', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas')),
-            new Twig_SimpleTest('none', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
-            new Twig_SimpleTest('null', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
-            new Twig_SimpleTest('divisibleby', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby', 'deprecated' => '1.21', 'alternative' => 'divisible by')),
-            new Twig_SimpleTest('divisible by', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby')),
-            new Twig_SimpleTest('constant', null, array('node_class' => 'Twig_Node_Expression_Test_Constant')),
-            new Twig_SimpleTest('empty', 'twig_test_empty'),
-            new Twig_SimpleTest('iterable', 'twig_test_iterable'),
-        );
-    }
-
-    public function getOperators()
-    {
-        return array(
-            array(
-                'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
-                '-' => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Neg'),
-                '+' => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Pos'),
-            ),
-            array(
-                'or' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'and' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'b-or' => array('precedence' => 16, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'b-xor' => array('precedence' => 17, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'b-and' => array('precedence' => 18, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '==' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '!=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '<' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '>' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '>=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '<=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'matches' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Matches', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'starts with' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_StartsWith', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'ends with' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_EndsWith', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '..' => array('precedence' => 25, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '+' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '-' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '~' => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '*' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mul', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '/' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Div', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '//' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_FloorDiv', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '%' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'is' => array('precedence' => 100, 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'is not' => array('precedence' => 100, 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '**' => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
-                '??' => array('precedence' => 300, 'class' => 'Twig_Node_Expression_NullCoalesce', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
-            ),
-        );
-    }
-
-    public function getName()
-    {
-        return 'core';
-    }
-}
-
-/**
- * Cycles over a value.
- *
- * @param ArrayAccess|array $values
- * @param int               $position The cycle position
- *
- * @return string The next value in the cycle
- */
-function twig_cycle($values, $position)
-{
-    if (!is_array($values) && !$values instanceof ArrayAccess) {
-        return $values;
-    }
-
-    return $values[$position % count($values)];
-}
-
-/**
- * Returns a random value depending on the supplied parameter type:
- * - a random item from a Traversable or array
- * - a random character from a string
- * - a random integer between 0 and the integer parameter.
- *
- * @param Twig_Environment                   $env
- * @param Traversable|array|int|float|string $values The values to pick a random item from
- *
- * @throws Twig_Error_Runtime when $values is an empty array (does not apply to an empty string which is returned as is)
- *
- * @return mixed A random value from the given sequence
- */
-function twig_random(Twig_Environment $env, $values = null)
-{
-    if (null === $values) {
-        return mt_rand();
-    }
-
-    if (is_int($values) || is_float($values)) {
-        return $values < 0 ? mt_rand($values, 0) : mt_rand(0, $values);
-    }
-
-    if ($values instanceof Traversable) {
-        $values = iterator_to_array($values);
-    } elseif (is_string($values)) {
-        if ('' === $values) {
-            return '';
-        }
-        if (null !== $charset = $env->getCharset()) {
-            if ('UTF-8' !== $charset) {
-                $values = twig_convert_encoding($values, 'UTF-8', $charset);
-            }
-
-            // unicode version of str_split()
-            // split at all positions, but not after the start and not before the end
-            $values = preg_split('/(?<!^)(?!$)/u', $values);
-
-            if ('UTF-8' !== $charset) {
-                foreach ($values as $i => $value) {
-                    $values[$i] = twig_convert_encoding($value, $charset, 'UTF-8');
-                }
-            }
-        } else {
-            return $values[mt_rand(0, strlen($values) - 1)];
-        }
-    }
-
-    if (!is_array($values)) {
-        return $values;
-    }
-
-    if (0 === count($values)) {
-        throw new Twig_Error_Runtime('The random function cannot pick from an empty array.');
-    }
-
-    return $values[array_rand($values, 1)];
-}
-
-/**
- * Converts a date to the given format.
- *
- * <pre>
- *   {{ post.published_at|date("m/d/Y") }}
- * </pre>
- *
- * @param Twig_Environment                               $env
- * @param DateTime|DateTimeInterface|DateInterval|string $date     A date
- * @param string|null                                    $format   The target format, null to use the default
- * @param DateTimeZone|string|null|false                 $timezone The target timezone, null to use the default, false to leave unchanged
- *
- * @return string The formatted date
- */
-function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $timezone = null)
-{
-    if (null === $format) {
-        $formats = $env->getExtension('Twig_Extension_Core')->getDateFormat();
-        $format = $date instanceof DateInterval ? $formats[1] : $formats[0];
-    }
-
-    if ($date instanceof DateInterval) {
-        return $date->format($format);
-    }
-
-    return twig_date_converter($env, $date, $timezone)->format($format);
-}
-
-/**
- * Returns a new date object modified.
- *
- * <pre>
- *   {{ post.published_at|date_modify("-1day")|date("m/d/Y") }}
- * </pre>
- *
- * @param Twig_Environment $env
- * @param DateTime|string  $date     A date
- * @param string           $modifier A modifier string
- *
- * @return DateTime A new date object
- */
-function twig_date_modify_filter(Twig_Environment $env, $date, $modifier)
-{
-    $date = twig_date_converter($env, $date, false);
-    $resultDate = $date->modify($modifier);
-
-    // This is a hack to ensure PHP 5.2 support and support for DateTimeImmutable
-    // DateTime::modify does not return the modified DateTime object < 5.3.0
-    // and DateTimeImmutable does not modify $date.
-    return null === $resultDate ? $date : $resultDate;
-}
-
-/**
- * Converts an input to a DateTime instance.
- *
- * <pre>
- *    {% if date(user.created_at) < date('+2days') %}
- *      {# do something #}
- *    {% endif %}
- * </pre>
- *
- * @param Twig_Environment                       $env
- * @param DateTime|DateTimeInterface|string|null $date     A date
- * @param DateTimeZone|string|null|false         $timezone The target timezone, null to use the default, false to leave unchanged
- *
- * @return DateTime A DateTime instance
- */
-function twig_date_converter(Twig_Environment $env, $date = null, $timezone = null)
-{
-    // determine the timezone
-    if (false !== $timezone) {
-        if (null === $timezone) {
-            $timezone = $env->getExtension('Twig_Extension_Core')->getTimezone();
-        } elseif (!$timezone instanceof DateTimeZone) {
-            $timezone = new DateTimeZone($timezone);
-        }
-    }
-
-    // immutable dates
-    if ($date instanceof DateTimeImmutable) {
-        return false !== $timezone ? $date->setTimezone($timezone) : $date;
-    }
-
-    if ($date instanceof DateTime || $date instanceof DateTimeInterface) {
-        $date = clone $date;
-        if (false !== $timezone) {
-            $date->setTimezone($timezone);
-        }
-
-        return $date;
-    }
-
-    if (null === $date || 'now' === $date) {
-        return new DateTime($date, false !== $timezone ? $timezone : $env->getExtension('Twig_Extension_Core')->getTimezone());
-    }
-
-    $asString = (string) $date;
-    if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) {
-        $date = new DateTime('@'.$date);
-    } else {
-        $date = new DateTime($date, $env->getExtension('Twig_Extension_Core')->getTimezone());
-    }
-
-    if (false !== $timezone) {
-        $date->setTimezone($timezone);
-    }
-
-    return $date;
-}
-
-/**
- * Replaces strings within a string.
- *
- * @param string            $str  String to replace in
- * @param array|Traversable $from Replace values
- * @param string|null       $to   Replace to, deprecated (@see https://secure.php.net/manual/en/function.strtr.php)
- *
- * @return string
- */
-function twig_replace_filter($str, $from, $to = null)
-{
-    if ($from instanceof Traversable) {
-        $from = iterator_to_array($from);
-    } elseif (is_string($from) && is_string($to)) {
-        @trigger_error('Using "replace" with character by character replacement is deprecated since version 1.22 and will be removed in Twig 2.0', E_USER_DEPRECATED);
-
-        return strtr($str, $from, $to);
-    } elseif (!is_array($from)) {
-        throw new Twig_Error_Runtime(sprintf('The "replace" filter expects an array or "Traversable" as replace values, got "%s".', is_object($from) ? get_class($from) : gettype($from)));
-    }
-
-    return strtr($str, $from);
-}
-
-/**
- * Rounds a number.
- *
- * @param int|float $value     The value to round
- * @param int|float $precision The rounding precision
- * @param string    $method    The method to use for rounding
- *
- * @return int|float The rounded number
- */
-function twig_round($value, $precision = 0, $method = 'common')
-{
-    if ('common' == $method) {
-        return round($value, $precision);
-    }
-
-    if ('ceil' != $method && 'floor' != $method) {
-        throw new Twig_Error_Runtime('The round filter only supports the "common", "ceil", and "floor" methods.');
-    }
-
-    return $method($value * pow(10, $precision)) / pow(10, $precision);
-}
-
-/**
- * Number format filter.
- *
- * All of the formatting options can be left null, in that case the defaults will
- * be used.  Supplying any of the parameters will override the defaults set in the
- * environment object.
- *
- * @param Twig_Environment $env
- * @param mixed            $number       A float/int/string of the number to format
- * @param int              $decimal      the number of decimal points to display
- * @param string           $decimalPoint the character(s) to use for the decimal point
- * @param string           $thousandSep  the character(s) to use for the thousands separator
- *
- * @return string The formatted number
- */
-function twig_number_format_filter(Twig_Environment $env, $number, $decimal = null, $decimalPoint = null, $thousandSep = null)
-{
-    $defaults = $env->getExtension('Twig_Extension_Core')->getNumberFormat();
-    if (null === $decimal) {
-        $decimal = $defaults[0];
-    }
-
-    if (null === $decimalPoint) {
-        $decimalPoint = $defaults[1];
-    }
-
-    if (null === $thousandSep) {
-        $thousandSep = $defaults[2];
-    }
-
-    return number_format((float) $number, $decimal, $decimalPoint, $thousandSep);
-}
-
-/**
- * URL encodes (RFC 3986) a string as a path segment or an array as a query string.
- *
- * @param string|array $url A URL or an array of query parameters
- *
- * @return string The URL encoded value
- */
-function twig_urlencode_filter($url)
-{
-    if (is_array($url)) {
-        if (defined('PHP_QUERY_RFC3986')) {
-            return http_build_query($url, '', '&', PHP_QUERY_RFC3986);
-        }
-
-        return http_build_query($url, '', '&');
-    }
-
-    return rawurlencode($url);
-}
-
-if (PHP_VERSION_ID < 50300) {
-    /**
-     * JSON encodes a variable.
-     *
-     * @param mixed $value   the value to encode
-     * @param int   $options Not used on PHP 5.2.x
-     *
-     * @return mixed The JSON encoded value
-     */
-    function twig_jsonencode_filter($value, $options = 0)
-    {
-        if ($value instanceof Twig_Markup) {
-            $value = (string) $value;
-        } elseif (is_array($value)) {
-            array_walk_recursive($value, '_twig_markup2string');
-        }
-
-        return json_encode($value);
-    }
-} else {
-    /**
-     * JSON encodes a variable.
-     *
-     * @param mixed $value   the value to encode
-     * @param int   $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
-     *
-     * @return mixed The JSON encoded value
-     */
-    function twig_jsonencode_filter($value, $options = 0)
-    {
-        if ($value instanceof Twig_Markup) {
-            $value = (string) $value;
-        } elseif (is_array($value)) {
-            array_walk_recursive($value, '_twig_markup2string');
-        }
-
-        return json_encode($value, $options);
-    }
-}
-
-function _twig_markup2string(&$value)
-{
-    if ($value instanceof Twig_Markup) {
-        $value = (string) $value;
-    }
-}
-
-/**
- * Merges an array with another one.
- *
- * <pre>
- *  {% set items = { 'apple': 'fruit', 'orange': 'fruit' } %}
- *
- *  {% set items = items|merge({ 'peugeot': 'car' }) %}
- *
- *  {# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car' } #}
- * </pre>
- *
- * @param array|Traversable $arr1 An array
- * @param array|Traversable $arr2 An array
- *
- * @return array The merged array
- */
-function twig_array_merge($arr1, $arr2)
-{
-    if ($arr1 instanceof Traversable) {
-        $arr1 = iterator_to_array($arr1);
-    } elseif (!is_array($arr1)) {
-        throw new Twig_Error_Runtime(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as first argument.', gettype($arr1)));
-    }
-
-    if ($arr2 instanceof Traversable) {
-        $arr2 = iterator_to_array($arr2);
-    } elseif (!is_array($arr2)) {
-        throw new Twig_Error_Runtime(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as second argument.', gettype($arr2)));
-    }
-
-    return array_merge($arr1, $arr2);
-}
-
-/**
- * Slices a variable.
- *
- * @param Twig_Environment $env
- * @param mixed            $item         A variable
- * @param int              $start        Start of the slice
- * @param int              $length       Size of the slice
- * @param bool             $preserveKeys Whether to preserve key or not (when the input is an array)
- *
- * @return mixed The sliced variable
- */
-function twig_slice(Twig_Environment $env, $item, $start, $length = null, $preserveKeys = false)
-{
-    if ($item instanceof Traversable) {
-        while ($item instanceof IteratorAggregate) {
-            $item = $item->getIterator();
-        }
-
-        if ($start >= 0 && $length >= 0 && $item instanceof Iterator) {
-            try {
-                return iterator_to_array(new LimitIterator($item, $start, null === $length ? -1 : $length), $preserveKeys);
-            } catch (OutOfBoundsException $exception) {
-                return array();
-            }
-        }
-
-        $item = iterator_to_array($item, $preserveKeys);
-    }
-
-    if (is_array($item)) {
-        return array_slice($item, $start, $length, $preserveKeys);
-    }
-
-    $item = (string) $item;
-
-    if (function_exists('mb_get_info') && null !== $charset = $env->getCharset()) {
-        return (string) mb_substr($item, $start, null === $length ? mb_strlen($item, $charset) - $start : $length, $charset);
-    }
-
-    return (string) (null === $length ? substr($item, $start) : substr($item, $start, $length));
-}
-
-/**
- * Returns the first element of the item.
- *
- * @param Twig_Environment $env
- * @param mixed            $item A variable
- *
- * @return mixed The first element of the item
- */
-function twig_first(Twig_Environment $env, $item)
-{
-    $elements = twig_slice($env, $item, 0, 1, false);
-
-    return is_string($elements) ? $elements : current($elements);
-}
-
-/**
- * Returns the last element of the item.
- *
- * @param Twig_Environment $env
- * @param mixed            $item A variable
- *
- * @return mixed The last element of the item
- */
-function twig_last(Twig_Environment $env, $item)
-{
-    $elements = twig_slice($env, $item, -1, 1, false);
-
-    return is_string($elements) ? $elements : current($elements);
-}
-
-/**
- * Joins the values to a string.
- *
- * The separator between elements is an empty string per default, you can define it with the optional parameter.
- *
- * <pre>
- *  {{ [1, 2, 3]|join('|') }}
- *  {# returns 1|2|3 #}
- *
- *  {{ [1, 2, 3]|join }}
- *  {# returns 123 #}
- * </pre>
- *
- * @param array  $value An array
- * @param string $glue  The separator
- *
- * @return string The concatenated string
- */
-function twig_join_filter($value, $glue = '')
-{
-    if ($value instanceof Traversable) {
-        $value = iterator_to_array($value, false);
-    }
-
-    return implode($glue, (array) $value);
-}
-
-/**
- * Splits the string into an array.
- *
- * <pre>
- *  {{ "one,two,three"|split(',') }}
- *  {# returns [one, two, three] #}
- *
- *  {{ "one,two,three,four,five"|split(',', 3) }}
- *  {# returns [one, two, "three,four,five"] #}
- *
- *  {{ "123"|split('') }}
- *  {# returns [1, 2, 3] #}
- *
- *  {{ "aabbcc"|split('', 2) }}
- *  {# returns [aa, bb, cc] #}
- * </pre>
- *
- * @param Twig_Environment $env
- * @param string           $value     A string
- * @param string           $delimiter The delimiter
- * @param int              $limit     The limit
- *
- * @return array The split string as an array
- */
-function twig_split_filter(Twig_Environment $env, $value, $delimiter, $limit = null)
-{
-    if (!empty($delimiter)) {
-        return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit);
-    }
-
-    if (!function_exists('mb_get_info') || null === $charset = $env->getCharset()) {
-        return str_split($value, null === $limit ? 1 : $limit);
-    }
-
-    if ($limit <= 1) {
-        return preg_split('/(?<!^)(?!$)/u', $value);
-    }
-
-    $length = mb_strlen($value, $charset);
-    if ($length < $limit) {
-        return array($value);
-    }
-
-    $r = array();
-    for ($i = 0; $i < $length; $i += $limit) {
-        $r[] = mb_substr($value, $i, $limit, $charset);
-    }
-
-    return $r;
-}
-
-// The '_default' filter is used internally to avoid using the ternary operator
-// which costs a lot for big contexts (before PHP 5.4). So, on average,
-// a function call is cheaper.
-/**
- * @internal
- */
-function _twig_default_filter($value, $default = '')
-{
-    if (twig_test_empty($value)) {
-        return $default;
-    }
-
-    return $value;
-}
-
-/**
- * Returns the keys for the given array.
- *
- * It is useful when you want to iterate over the keys of an array:
- *
- * <pre>
- *  {% for key in array|keys %}
- *      {# ... #}
- *  {% endfor %}
- * </pre>
- *
- * @param array $array An array
- *
- * @return array The keys
- */
-function twig_get_array_keys_filter($array)
-{
-    if ($array instanceof Traversable) {
-        while ($array instanceof IteratorAggregate) {
-            $array = $array->getIterator();
-        }
-
-        if ($array instanceof Iterator) {
-            $keys = array();
-            $array->rewind();
-            while ($array->valid()) {
-                $keys[] = $array->key();
-                $array->next();
-            }
-
-            return $keys;
-        }
-
-        $keys = array();
-        foreach ($array as $key => $item) {
-            $keys[] = $key;
-        }
-
-        return $keys;
-    }
-
-    if (!is_array($array)) {
-        return array();
-    }
-
-    return array_keys($array);
-}
-
-/**
- * Reverses a variable.
- *
- * @param Twig_Environment         $env
- * @param array|Traversable|string $item         An array, a Traversable instance, or a string
- * @param bool                     $preserveKeys Whether to preserve key or not
- *
- * @return mixed The reversed input
- */
-function twig_reverse_filter(Twig_Environment $env, $item, $preserveKeys = false)
-{
-    if ($item instanceof Traversable) {
-        return array_reverse(iterator_to_array($item), $preserveKeys);
-    }
-
-    if (is_array($item)) {
-        return array_reverse($item, $preserveKeys);
-    }
-
-    if (null !== $charset = $env->getCharset()) {
-        $string = (string) $item;
-
-        if ('UTF-8' !== $charset) {
-            $item = twig_convert_encoding($string, 'UTF-8', $charset);
-        }
-
-        preg_match_all('/./us', $item, $matches);
-
-        $string = implode('', array_reverse($matches[0]));
-
-        if ('UTF-8' !== $charset) {
-            $string = twig_convert_encoding($string, $charset, 'UTF-8');
-        }
-
-        return $string;
-    }
-
-    return strrev((string) $item);
-}
-
-/**
- * Sorts an array.
- *
- * @param array|Traversable $array
- *
- * @return array
- */
-function twig_sort_filter($array)
-{
-    if ($array instanceof Traversable) {
-        $array = iterator_to_array($array);
-    } elseif (!is_array($array)) {
-        throw new Twig_Error_Runtime(sprintf('The sort filter only works with arrays or "Traversable", got "%s".', gettype($array)));
-    }
-
-    asort($array);
-
-    return $array;
-}
-
-/**
- * @internal
- */
-function twig_in_filter($value, $compare)
-{
-    if (is_array($compare)) {
-        return in_array($value, $compare, is_object($value) || is_resource($value));
-    } elseif (is_string($compare) && (is_string($value) || is_int($value) || is_float($value))) {
-        return '' === $value || false !== strpos($compare, (string) $value);
-    } elseif ($compare instanceof Traversable) {
-        if (is_object($value) || is_resource($value)) {
-            foreach ($compare as $item) {
-                if ($item === $value) {
-                    return true;
-                }
-            }
-        } else {
-            foreach ($compare as $item) {
-                if ($item == $value) {
-                    return true;
-                }
-            }
-        }
-
-        return false;
-    }
-
-    return false;
-}
-
-/**
- * Returns a trimmed string.
- *
- * @return string
- *
- * @throws Twig_Error_Runtime When an invalid trimming side is used (not a string or not 'left', 'right', or 'both')
- */
-function twig_trim_filter($string, $characterMask = null, $side = 'both')
-{
-    if (null === $characterMask) {
-        $characterMask = " \t\n\r\0\x0B";
-    }
-
-    switch ($side) {
-        case 'both':
-            return trim($string, $characterMask);
-        case 'left':
-            return ltrim($string, $characterMask);
-        case 'right':
-            return rtrim($string, $characterMask);
-        default:
-            throw new Twig_Error_Runtime('Trimming side must be "left", "right" or "both".');
-    }
-}
-
-/**
- * Escapes a string.
- *
- * @param Twig_Environment $env
- * @param mixed            $string     The value to be escaped
- * @param string           $strategy   The escaping strategy
- * @param string           $charset    The charset
- * @param bool             $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
- *
- * @return string
- */
-function twig_escape_filter(Twig_Environment $env, $string, $strategy = 'html', $charset = null, $autoescape = false)
-{
-    if ($autoescape && $string instanceof Twig_Markup) {
-        return $string;
-    }
-
-    if (!is_string($string)) {
-        if (is_object($string) && method_exists($string, '__toString')) {
-            $string = (string) $string;
-        } elseif (in_array($strategy, array('html', 'js', 'css', 'html_attr', 'url'))) {
-            return $string;
-        }
-    }
-
-    if (null === $charset) {
-        $charset = $env->getCharset();
-    }
-
-    switch ($strategy) {
-        case 'html':
-            // see https://secure.php.net/htmlspecialchars
-
-            // Using a static variable to avoid initializing the array
-            // each time the function is called. Moving the declaration on the
-            // top of the function slow downs other escaping strategies.
-            static $htmlspecialcharsCharsets = array(
-                'ISO-8859-1' => true, 'ISO8859-1' => true,
-                'ISO-8859-15' => true, 'ISO8859-15' => true,
-                'utf-8' => true, 'UTF-8' => true,
-                'CP866' => true, 'IBM866' => true, '866' => true,
-                'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
-                '1251' => true,
-                'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
-                'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
-                'BIG5' => true, '950' => true,
-                'GB2312' => true, '936' => true,
-                'BIG5-HKSCS' => true,
-                'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
-                'EUC-JP' => true, 'EUCJP' => true,
-                'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
-            );
-
-            if (isset($htmlspecialcharsCharsets[$charset])) {
-                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
-            }
-
-            if (isset($htmlspecialcharsCharsets[strtoupper($charset)])) {
-                // cache the lowercase variant for future iterations
-                $htmlspecialcharsCharsets[$charset] = true;
-
-                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
-            }
-
-            $string = twig_convert_encoding($string, 'UTF-8', $charset);
-            $string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
-
-            return twig_convert_encoding($string, $charset, 'UTF-8');
-
-        case 'js':
-            // escape all non-alphanumeric characters
-            // into their \x or \uHHHH representations
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, 'UTF-8', $charset);
-            }
-
-            if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
-                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
-            }
-
-            $string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', '_twig_escape_js_callback', $string);
-
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, $charset, 'UTF-8');
-            }
-
-            return $string;
-
-        case 'css':
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, 'UTF-8', $charset);
-            }
-
-            if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
-                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
-            }
-
-            $string = preg_replace_callback('#[^a-zA-Z0-9]#Su', '_twig_escape_css_callback', $string);
-
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, $charset, 'UTF-8');
-            }
-
-            return $string;
-
-        case 'html_attr':
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, 'UTF-8', $charset);
-            }
-
-            if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
-                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
-            }
-
-            $string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', '_twig_escape_html_attr_callback', $string);
-
-            if ('UTF-8' !== $charset) {
-                $string = twig_convert_encoding($string, $charset, 'UTF-8');
-            }
-
-            return $string;
-
-        case 'url':
-            if (PHP_VERSION_ID < 50300) {
-                return str_replace('%7E', '~', rawurlencode($string));
-            }
-
-            return rawurlencode($string);
-
-        default:
-            static $escapers;
-
-            if (null === $escapers) {
-                $escapers = $env->getExtension('Twig_Extension_Core')->getEscapers();
-            }
-
-            if (isset($escapers[$strategy])) {
-                return call_user_func($escapers[$strategy], $env, $string, $charset);
-            }
-
-            $validStrategies = implode(', ', array_merge(array('html', 'js', 'url', 'css', 'html_attr'), array_keys($escapers)));
-
-            throw new Twig_Error_Runtime(sprintf('Invalid escaping strategy "%s" (valid ones: %s).', $strategy, $validStrategies));
-    }
-}
-
-/**
- * @internal
- */
-function twig_escape_filter_is_safe(Twig_Node $filterArgs)
-{
-    foreach ($filterArgs as $arg) {
-        if ($arg instanceof Twig_Node_Expression_Constant) {
-            return array($arg->getAttribute('value'));
-        }
-
-        return array();
-    }
-
-    return array('html');
-}
-
-if (function_exists('mb_convert_encoding')) {
-    function twig_convert_encoding($string, $to, $from)
-    {
-        return mb_convert_encoding($string, $to, $from);
-    }
-} elseif (function_exists('iconv')) {
-    function twig_convert_encoding($string, $to, $from)
-    {
-        return iconv($from, $to, $string);
-    }
-} else {
-    function twig_convert_encoding($string, $to, $from)
-    {
-        throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
-    }
-}
-
-function _twig_escape_js_callback($matches)
-{
-    $char = $matches[0];
-
-    /*
-     * A few characters have short escape sequences in JSON and JavaScript.
-     * Escape sequences supported only by JavaScript, not JSON, are ommitted.
-     * \" is also supported but omitted, because the resulting string is not HTML safe.
-     */
-    static $shortMap = array(
-        '\\' => '\\\\',
-        '/' => '\\/',
-        "\x08" => '\b',
-        "\x0C" => '\f',
-        "\x0A" => '\n',
-        "\x0D" => '\r',
-        "\x09" => '\t',
-    );
-
-    if (isset($shortMap[$char])) {
-        return $shortMap[$char];
-    }
-
-    // \uHHHH
-    $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
-    $char = strtoupper(bin2hex($char));
-
-    if (4 >= strlen($char)) {
-        return sprintf('\u%04s', $char);
-    }
-
-    return sprintf('\u%04s\u%04s', substr($char, 0, -4), substr($char, -4));
-}
-
-function _twig_escape_css_callback($matches)
-{
-    $char = $matches[0];
-
-    // \xHH
-    if (!isset($char[1])) {
-        $hex = ltrim(strtoupper(bin2hex($char)), '0');
-        if (0 === strlen($hex)) {
-            $hex = '0';
-        }
-
-        return '\\'.$hex.' ';
-    }
-
-    // \uHHHH
-    $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
-
-    return '\\'.ltrim(strtoupper(bin2hex($char)), '0').' ';
-}
-
-/**
- * This function is adapted from code coming from Zend Framework.
- *
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (https://www.zend.com)
- * @license   https://framework.zend.com/license/new-bsd New BSD License
- */
-function _twig_escape_html_attr_callback($matches)
-{
-    /*
-     * While HTML supports far more named entities, the lowest common denominator
-     * has become HTML5's XML Serialisation which is restricted to the those named
-     * entities that XML supports. Using HTML entities would result in this error:
-     *     XML Parsing Error: undefined entity
-     */
-    static $entityMap = array(
-        34 => 'quot', /* quotation mark */
-        38 => 'amp',  /* ampersand */
-        60 => 'lt',   /* less-than sign */
-        62 => 'gt',   /* greater-than sign */
-    );
-
-    $chr = $matches[0];
-    $ord = ord($chr);
-
-    /*
-     * The following replaces characters undefined in HTML with the
-     * hex entity for the Unicode replacement character.
-     */
-    if (($ord <= 0x1f && "\t" != $chr && "\n" != $chr && "\r" != $chr) || ($ord >= 0x7f && $ord <= 0x9f)) {
-        return '&#xFFFD;';
-    }
-
-    /*
-     * Check if the current character to escape has a name entity we should
-     * replace it with while grabbing the hex value of the character.
-     */
-    if (1 == strlen($chr)) {
-        $hex = strtoupper(substr('00'.bin2hex($chr), -2));
-    } else {
-        $chr = twig_convert_encoding($chr, 'UTF-16BE', 'UTF-8');
-        $hex = strtoupper(substr('0000'.bin2hex($chr), -4));
-    }
-
-    $int = hexdec($hex);
-    if (array_key_exists($int, $entityMap)) {
-        return sprintf('&%s;', $entityMap[$int]);
-    }
-
-    /*
-     * Per OWASP recommendations, we'll use hex entities for any other
-     * characters where a named entity does not exist.
-     */
-    return sprintf('&#x%s;', $hex);
-}
-
-// add multibyte extensions if possible
-if (function_exists('mb_get_info')) {
-    /**
-     * Returns the length of a variable.
-     *
-     * @param Twig_Environment $env
-     * @param mixed            $thing A variable
-     *
-     * @return int The length of the value
-     */
-    function twig_length_filter(Twig_Environment $env, $thing)
-    {
-        if (null === $thing) {
-            return 0;
-        }
-
-        if (is_scalar($thing)) {
-            return mb_strlen($thing, $env->getCharset());
-        }
-
-        if ($thing instanceof \SimpleXMLElement) {
-            return count($thing);
-        }
-
-        if (is_object($thing) && method_exists($thing, '__toString') && !$thing instanceof \Countable) {
-            return mb_strlen((string) $thing, $env->getCharset());
-        }
-
-        if ($thing instanceof \Countable || is_array($thing)) {
-            return count($thing);
-        }
-
-        if ($thing instanceof \IteratorAggregate) {
-            return iterator_count($thing);
-        }
-
-        return 1;
-    }
-
-    /**
-     * Converts a string to uppercase.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The uppercased string
-     */
-    function twig_upper_filter(Twig_Environment $env, $string)
-    {
-        if (null !== $charset = $env->getCharset()) {
-            return mb_strtoupper($string, $charset);
-        }
-
-        return strtoupper($string);
-    }
-
-    /**
-     * Converts a string to lowercase.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The lowercased string
-     */
-    function twig_lower_filter(Twig_Environment $env, $string)
-    {
-        if (null !== $charset = $env->getCharset()) {
-            return mb_strtolower($string, $charset);
-        }
-
-        return strtolower($string);
-    }
-
-    /**
-     * Returns a titlecased string.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The titlecased string
-     */
-    function twig_title_string_filter(Twig_Environment $env, $string)
-    {
-        if (null !== $charset = $env->getCharset()) {
-            return mb_convert_case($string, MB_CASE_TITLE, $charset);
-        }
-
-        return ucwords(strtolower($string));
-    }
-
-    /**
-     * Returns a capitalized string.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The capitalized string
-     */
-    function twig_capitalize_string_filter(Twig_Environment $env, $string)
-    {
-        if (null !== $charset = $env->getCharset()) {
-            return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).mb_strtolower(mb_substr($string, 1, mb_strlen($string, $charset), $charset), $charset);
-        }
-
-        return ucfirst(strtolower($string));
-    }
-}
-// and byte fallback
-else {
-    /**
-     * Returns the length of a variable.
-     *
-     * @param Twig_Environment $env
-     * @param mixed            $thing A variable
-     *
-     * @return int The length of the value
-     */
-    function twig_length_filter(Twig_Environment $env, $thing)
-    {
-        if (null === $thing) {
-            return 0;
-        }
-
-        if (is_scalar($thing)) {
-            return strlen($thing);
-        }
-
-        if ($thing instanceof \SimpleXMLElement) {
-            return count($thing);
-        }
-
-        if (is_object($thing) && method_exists($thing, '__toString') && !$thing instanceof \Countable) {
-            return strlen((string) $thing);
-        }
-
-        if ($thing instanceof \Countable || is_array($thing)) {
-            return count($thing);
-        }
-
-        if ($thing instanceof \IteratorAggregate) {
-            return iterator_count($thing);
-        }
-
-        return 1;
-    }
-
-    /**
-     * Returns a titlecased string.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The titlecased string
-     */
-    function twig_title_string_filter(Twig_Environment $env, $string)
-    {
-        return ucwords(strtolower($string));
-    }
-
-    /**
-     * Returns a capitalized string.
-     *
-     * @param Twig_Environment $env
-     * @param string           $string A string
-     *
-     * @return string The capitalized string
-     */
-    function twig_capitalize_string_filter(Twig_Environment $env, $string)
-    {
-        return ucfirst(strtolower($string));
-    }
-}
-
-/**
- * @internal
- */
-function twig_ensure_traversable($seq)
-{
-    if ($seq instanceof Traversable || is_array($seq)) {
-        return $seq;
-    }
-
-    return array();
-}
-
-/**
- * Checks if a variable is empty.
- *
- * <pre>
- * {# evaluates to true if the foo variable is null, false, or the empty string #}
- * {% if foo is empty %}
- *     {# ... #}
- * {% endif %}
- * </pre>
- *
- * @param mixed $value A variable
- *
- * @return bool true if the value is empty, false otherwise
- */
-function twig_test_empty($value)
-{
-    if ($value instanceof Countable) {
-        return 0 == count($value);
-    }
-
-    if (is_object($value) && method_exists($value, '__toString')) {
-        return '' === (string) $value;
-    }
-
-    return '' === $value || false === $value || null === $value || array() === $value;
-}
-
-/**
- * Checks if a variable is traversable.
- *
- * <pre>
- * {# evaluates to true if the foo variable is an array or a traversable object #}
- * {% if foo is iterable %}
- *     {# ... #}
- * {% endif %}
- * </pre>
- *
- * @param mixed $value A variable
- *
- * @return bool true if the value is traversable
- */
-function twig_test_iterable($value)
-{
-    return $value instanceof Traversable || is_array($value);
-}
-
-/**
- * Renders a template.
- *
- * @param Twig_Environment $env
- * @param array            $context
- * @param string|array     $template      The template to render or an array of templates to try consecutively
- * @param array            $variables     The variables to pass to the template
- * @param bool             $withContext
- * @param bool             $ignoreMissing Whether to ignore missing templates or not
- * @param bool             $sandboxed     Whether to sandbox the template or not
- *
- * @return string The rendered template
- */
-function twig_include(Twig_Environment $env, $context, $template, $variables = array(), $withContext = true, $ignoreMissing = false, $sandboxed = false)
-{
-    $alreadySandboxed = false;
-    $sandbox = null;
-    if ($withContext) {
-        $variables = array_merge($context, $variables);
-    }
-
-    if ($isSandboxed = $sandboxed && $env->hasExtension('Twig_Extension_Sandbox')) {
-        $sandbox = $env->getExtension('Twig_Extension_Sandbox');
-        if (!$alreadySandboxed = $sandbox->isSandboxed()) {
-            $sandbox->enableSandbox();
-        }
-    }
-
-    $result = null;
-    try {
-        $result = $env->resolveTemplate($template)->render($variables);
-    } catch (Twig_Error_Loader $e) {
-        if (!$ignoreMissing) {
-            if ($isSandboxed && !$alreadySandboxed) {
-                $sandbox->disableSandbox();
-            }
-
-            throw $e;
-        }
-    } catch (Throwable $e) {
-        if ($isSandboxed && !$alreadySandboxed) {
-            $sandbox->disableSandbox();
-        }
-
-        throw $e;
-    } catch (Exception $e) {
-        if ($isSandboxed && !$alreadySandboxed) {
-            $sandbox->disableSandbox();
-        }
-
-        throw $e;
-    }
-
-    if ($isSandboxed && !$alreadySandboxed) {
-        $sandbox->disableSandbox();
-    }
-
-    return $result;
-}
-
-/**
- * Returns a template content without rendering it.
- *
- * @param Twig_Environment $env
- * @param string           $name          The template name
- * @param bool             $ignoreMissing Whether to ignore missing templates or not
- *
- * @return string The template source
- */
-function twig_source(Twig_Environment $env, $name, $ignoreMissing = false)
-{
-    $loader = $env->getLoader();
-    try {
-        if (!$loader instanceof Twig_SourceContextLoaderInterface) {
-            return $loader->getSource($name);
-        } else {
-            return $loader->getSourceContext($name)->getCode();
-        }
-    } catch (Twig_Error_Loader $e) {
-        if (!$ignoreMissing) {
-            throw $e;
-        }
-    }
-}
-
-/**
- * Provides the ability to get constants from instances as well as class/global constants.
- *
- * @param string      $constant The name of the constant
- * @param null|object $object   The object to get the constant from
- *
- * @return string
- */
-function twig_constant($constant, $object = null)
-{
-    if (null !== $object) {
-        $constant = get_class($object).'::'.$constant;
-    }
-
-    return constant($constant);
-}
-
-/**
- * Checks if a constant exists.
- *
- * @param string      $constant The name of the constant
- * @param null|object $object   The object to get the constant from
- *
- * @return bool
- */
-function twig_constant_is_defined($constant, $object = null)
-{
-    if (null !== $object) {
-        $constant = get_class($object).'::'.$constant;
-    }
-
-    return defined($constant);
-}
-
-/**
- * Batches item.
- *
- * @param array $items An array of items
- * @param int   $size  The size of the batch
- * @param mixed $fill  A value used to fill missing items
- *
- * @return array
- */
-function twig_array_batch($items, $size, $fill = null)
-{
-    if ($items instanceof Traversable) {
-        $items = iterator_to_array($items, false);
-    }
-
-    $size = ceil($size);
-
-    $result = array_chunk($items, $size, true);
-
-    if (null !== $fill && !empty($result)) {
-        $last = count($result) - 1;
-        if ($fillCount = $size - count($result[$last])) {
-            $result[$last] = array_merge(
-                $result[$last],
-                array_fill(0, $fillCount, $fill)
-            );
-        }
-    }
-
-    return $result;
-}
-
-class_alias('Twig_Extension_Core', 'Twig\Extension\CoreExtension', false);
diff --git a/inc/lib/Twig/Extension/Debug.php b/inc/lib/Twig/Extension/Debug.php
deleted file mode 100644
index d0cd1962..00000000
--- a/inc/lib/Twig/Extension/Debug.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_Debug extends Twig_Extension
-{
-    public function getFunctions()
-    {
-        // dump is safe if var_dump is overridden by xdebug
-        $isDumpOutputHtmlSafe = extension_loaded('xdebug')
-            // false means that it was not set (and the default is on) or it explicitly enabled
-            && (false === ini_get('xdebug.overload_var_dump') || ini_get('xdebug.overload_var_dump'))
-            // false means that it was not set (and the default is on) or it explicitly enabled
-            // xdebug.overload_var_dump produces HTML only when html_errors is also enabled
-            && (false === ini_get('html_errors') || ini_get('html_errors'))
-            || 'cli' === PHP_SAPI
-        ;
-
-        return array(
-            new Twig_SimpleFunction('dump', 'twig_var_dump', array('is_safe' => $isDumpOutputHtmlSafe ? array('html') : array(), 'needs_context' => true, 'needs_environment' => true)),
-        );
-    }
-
-    public function getName()
-    {
-        return 'debug';
-    }
-}
-
-function twig_var_dump(Twig_Environment $env, $context)
-{
-    if (!$env->isDebug()) {
-        return;
-    }
-
-    ob_start();
-
-    $count = func_num_args();
-    if (2 === $count) {
-        $vars = array();
-        foreach ($context as $key => $value) {
-            if (!$value instanceof Twig_Template) {
-                $vars[$key] = $value;
-            }
-        }
-
-        var_dump($vars);
-    } else {
-        for ($i = 2; $i < $count; ++$i) {
-            var_dump(func_get_arg($i));
-        }
-    }
-
-    return ob_get_clean();
-}
-
-class_alias('Twig_Extension_Debug', 'Twig\Extension\DebugExtension', false);
diff --git a/inc/lib/Twig/Extension/Escaper.php b/inc/lib/Twig/Extension/Escaper.php
deleted file mode 100644
index 46c2d84b..00000000
--- a/inc/lib/Twig/Extension/Escaper.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_Escaper extends Twig_Extension
-{
-    protected $defaultStrategy;
-
-    /**
-     * @param string|false|callable $defaultStrategy An escaping strategy
-     *
-     * @see setDefaultStrategy()
-     */
-    public function __construct($defaultStrategy = 'html')
-    {
-        $this->setDefaultStrategy($defaultStrategy);
-    }
-
-    public function getTokenParsers()
-    {
-        return array(new Twig_TokenParser_AutoEscape());
-    }
-
-    public function getNodeVisitors()
-    {
-        return array(new Twig_NodeVisitor_Escaper());
-    }
-
-    public function getFilters()
-    {
-        return array(
-            new Twig_SimpleFilter('raw', 'twig_raw_filter', array('is_safe' => array('all'))),
-        );
-    }
-
-    /**
-     * Sets the default strategy to use when not defined by the user.
-     *
-     * The strategy can be a valid PHP callback that takes the template
-     * name as an argument and returns the strategy to use.
-     *
-     * @param string|false|callable $defaultStrategy An escaping strategy
-     */
-    public function setDefaultStrategy($defaultStrategy)
-    {
-        // for BC
-        if (true === $defaultStrategy) {
-            @trigger_error('Using "true" as the default strategy is deprecated since version 1.21. Use "html" instead.', E_USER_DEPRECATED);
-
-            $defaultStrategy = 'html';
-        }
-
-        if ('filename' === $defaultStrategy) {
-            @trigger_error('Using "filename" as the default strategy is deprecated since version 1.27. Use "name" instead.', E_USER_DEPRECATED);
-
-            $defaultStrategy = 'name';
-        }
-
-        if ('name' === $defaultStrategy) {
-            $defaultStrategy = array('Twig_FileExtensionEscapingStrategy', 'guess');
-        }
-
-        $this->defaultStrategy = $defaultStrategy;
-    }
-
-    /**
-     * Gets the default strategy to use when not defined by the user.
-     *
-     * @param string $name The template name
-     *
-     * @return string|false The default strategy to use for the template
-     */
-    public function getDefaultStrategy($name)
-    {
-        // disable string callables to avoid calling a function named html or js,
-        // or any other upcoming escaping strategy
-        if (!is_string($this->defaultStrategy) && false !== $this->defaultStrategy) {
-            return call_user_func($this->defaultStrategy, $name);
-        }
-
-        return $this->defaultStrategy;
-    }
-
-    public function getName()
-    {
-        return 'escaper';
-    }
-}
-
-/**
- * Marks a variable as being safe.
- *
- * @param string $string A PHP variable
- *
- * @return string
- */
-function twig_raw_filter($string)
-{
-    return $string;
-}
-
-class_alias('Twig_Extension_Escaper', 'Twig\Extension\EscaperExtension', false);
diff --git a/inc/lib/Twig/Extension/GlobalsInterface.php b/inc/lib/Twig/Extension/GlobalsInterface.php
deleted file mode 100644
index 922cd2c9..00000000
--- a/inc/lib/Twig/Extension/GlobalsInterface.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Enables usage of the deprecated Twig_Extension::getGlobals() method.
- *
- * Explicitly implement this interface if you really need to implement the
- * deprecated getGlobals() method in your extensions.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_Extension_GlobalsInterface
-{
-}
-
-class_alias('Twig_Extension_GlobalsInterface', 'Twig\Extension\GlobalsInterface', false);
diff --git a/inc/lib/Twig/Extension/InitRuntimeInterface.php b/inc/lib/Twig/Extension/InitRuntimeInterface.php
deleted file mode 100644
index 1549862f..00000000
--- a/inc/lib/Twig/Extension/InitRuntimeInterface.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Enables usage of the deprecated Twig_Extension::initRuntime() method.
- *
- * Explicitly implement this interface if you really need to implement the
- * deprecated initRuntime() method in your extensions.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_Extension_InitRuntimeInterface
-{
-}
-
-class_alias('Twig_Extension_InitRuntimeInterface', 'Twig\Extension\InitRuntimeInterface', false);
diff --git a/inc/lib/Twig/Extension/Optimizer.php b/inc/lib/Twig/Extension/Optimizer.php
deleted file mode 100644
index 6c62e3ef..00000000
--- a/inc/lib/Twig/Extension/Optimizer.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_Optimizer extends Twig_Extension
-{
-    protected $optimizers;
-
-    public function __construct($optimizers = -1)
-    {
-        $this->optimizers = $optimizers;
-    }
-
-    public function getNodeVisitors()
-    {
-        return array(new Twig_NodeVisitor_Optimizer($this->optimizers));
-    }
-
-    public function getName()
-    {
-        return 'optimizer';
-    }
-}
-
-class_alias('Twig_Extension_Optimizer', 'Twig\Extension\OptimizerExtension', false);
diff --git a/inc/lib/Twig/Extension/Profiler.php b/inc/lib/Twig/Extension/Profiler.php
deleted file mode 100644
index fcfc002b..00000000
--- a/inc/lib/Twig/Extension/Profiler.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-class Twig_Extension_Profiler extends Twig_Extension
-{
-    private $actives = array();
-
-    public function __construct(Twig_Profiler_Profile $profile)
-    {
-        $this->actives[] = $profile;
-    }
-
-    public function enter(Twig_Profiler_Profile $profile)
-    {
-        $this->actives[0]->addProfile($profile);
-        array_unshift($this->actives, $profile);
-    }
-
-    public function leave(Twig_Profiler_Profile $profile)
-    {
-        $profile->leave();
-        array_shift($this->actives);
-
-        if (1 === count($this->actives)) {
-            $this->actives[0]->leave();
-        }
-    }
-
-    public function getNodeVisitors()
-    {
-        return array(new Twig_Profiler_NodeVisitor_Profiler(get_class($this)));
-    }
-
-    public function getName()
-    {
-        return 'profiler';
-    }
-}
-
-class_alias('Twig_Extension_Profiler', 'Twig\Extension\ProfilerExtension', false);
-class_exists('Twig_Profiler_Profile');
diff --git a/inc/lib/Twig/Extension/Sandbox.php b/inc/lib/Twig/Extension/Sandbox.php
deleted file mode 100644
index 5cb80a71..00000000
--- a/inc/lib/Twig/Extension/Sandbox.php
+++ /dev/null
@@ -1,103 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_Sandbox extends Twig_Extension
-{
-    protected $sandboxedGlobally;
-    protected $sandboxed;
-    protected $policy;
-
-    public function __construct(Twig_Sandbox_SecurityPolicyInterface $policy, $sandboxed = false)
-    {
-        $this->policy = $policy;
-        $this->sandboxedGlobally = $sandboxed;
-    }
-
-    public function getTokenParsers()
-    {
-        return array(new Twig_TokenParser_Sandbox());
-    }
-
-    public function getNodeVisitors()
-    {
-        return array(new Twig_NodeVisitor_Sandbox());
-    }
-
-    public function enableSandbox()
-    {
-        $this->sandboxed = true;
-    }
-
-    public function disableSandbox()
-    {
-        $this->sandboxed = false;
-    }
-
-    public function isSandboxed()
-    {
-        return $this->sandboxedGlobally || $this->sandboxed;
-    }
-
-    public function isSandboxedGlobally()
-    {
-        return $this->sandboxedGlobally;
-    }
-
-    public function setSecurityPolicy(Twig_Sandbox_SecurityPolicyInterface $policy)
-    {
-        $this->policy = $policy;
-    }
-
-    public function getSecurityPolicy()
-    {
-        return $this->policy;
-    }
-
-    public function checkSecurity($tags, $filters, $functions)
-    {
-        if ($this->isSandboxed()) {
-            $this->policy->checkSecurity($tags, $filters, $functions);
-        }
-    }
-
-    public function checkMethodAllowed($obj, $method)
-    {
-        if ($this->isSandboxed()) {
-            $this->policy->checkMethodAllowed($obj, $method);
-        }
-    }
-
-    public function checkPropertyAllowed($obj, $method)
-    {
-        if ($this->isSandboxed()) {
-            $this->policy->checkPropertyAllowed($obj, $method);
-        }
-    }
-
-    public function ensureToStringAllowed($obj)
-    {
-        if ($this->isSandboxed() && is_object($obj)) {
-            $this->policy->checkMethodAllowed($obj, '__toString');
-        }
-
-        return $obj;
-    }
-
-    public function getName()
-    {
-        return 'sandbox';
-    }
-}
-
-class_alias('Twig_Extension_Sandbox', 'Twig\Extension\SandboxExtension', false);
diff --git a/inc/lib/Twig/Extension/Staging.php b/inc/lib/Twig/Extension/Staging.php
deleted file mode 100644
index d3a0f9c9..00000000
--- a/inc/lib/Twig/Extension/Staging.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Internal class.
- *
- * This class is used by Twig_Environment as a staging area and must not be used directly.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @internal
- */
-class Twig_Extension_Staging extends Twig_Extension
-{
-    protected $functions = array();
-    protected $filters = array();
-    protected $visitors = array();
-    protected $tokenParsers = array();
-    protected $globals = array();
-    protected $tests = array();
-
-    public function addFunction($name, $function)
-    {
-        if (isset($this->functions[$name])) {
-            @trigger_error(sprintf('Overriding function "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
-        }
-
-        $this->functions[$name] = $function;
-    }
-
-    public function getFunctions()
-    {
-        return $this->functions;
-    }
-
-    public function addFilter($name, $filter)
-    {
-        if (isset($this->filters[$name])) {
-            @trigger_error(sprintf('Overriding filter "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
-        }
-
-        $this->filters[$name] = $filter;
-    }
-
-    public function getFilters()
-    {
-        return $this->filters;
-    }
-
-    public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
-    {
-        $this->visitors[] = $visitor;
-    }
-
-    public function getNodeVisitors()
-    {
-        return $this->visitors;
-    }
-
-    public function addTokenParser(Twig_TokenParserInterface $parser)
-    {
-        if (isset($this->tokenParsers[$parser->getTag()])) {
-            @trigger_error(sprintf('Overriding tag "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $parser->getTag()), E_USER_DEPRECATED);
-        }
-
-        $this->tokenParsers[$parser->getTag()] = $parser;
-    }
-
-    public function getTokenParsers()
-    {
-        return $this->tokenParsers;
-    }
-
-    public function addGlobal($name, $value)
-    {
-        $this->globals[$name] = $value;
-    }
-
-    public function getGlobals()
-    {
-        return $this->globals;
-    }
-
-    public function addTest($name, $test)
-    {
-        if (isset($this->tests[$name])) {
-            @trigger_error(sprintf('Overriding test "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
-        }
-
-        $this->tests[$name] = $test;
-    }
-
-    public function getTests()
-    {
-        return $this->tests;
-    }
-
-    public function getName()
-    {
-        return 'staging';
-    }
-}
-
-class_alias('Twig_Extension_Staging', 'Twig\Extension\StagingExtension', false);
diff --git a/inc/lib/Twig/Extension/StringLoader.php b/inc/lib/Twig/Extension/StringLoader.php
deleted file mode 100644
index 2ce3c992..00000000
--- a/inc/lib/Twig/Extension/StringLoader.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_Extension_StringLoader extends Twig_Extension
-{
-    public function getFunctions()
-    {
-        return array(
-            new Twig_SimpleFunction('template_from_string', 'twig_template_from_string', array('needs_environment' => true)),
-        );
-    }
-
-    public function getName()
-    {
-        return 'string_loader';
-    }
-}
-
-/**
- * Loads a template from a string.
- *
- * <pre>
- * {{ include(template_from_string("Hello {{ name }}")) }}
- * </pre>
- *
- * @param Twig_Environment $env      A Twig_Environment instance
- * @param string           $template A template as a string or object implementing __toString()
- *
- * @return Twig_Template
- */
-function twig_template_from_string(Twig_Environment $env, $template)
-{
-    return $env->createTemplate((string) $template);
-}
-
-class_alias('Twig_Extension_StringLoader', 'Twig\Extension\StringLoaderExtension', false);
diff --git a/inc/lib/Twig/ExtensionInterface.php b/inc/lib/Twig/ExtensionInterface.php
deleted file mode 100644
index 946df500..00000000
--- a/inc/lib/Twig/ExtensionInterface.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by extension classes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_ExtensionInterface
-{
-    /**
-     * Initializes the runtime environment.
-     *
-     * This is where you can load some file that contains filter functions for instance.
-     *
-     * @deprecated since 1.23 (to be removed in 2.0), implement Twig_Extension_InitRuntimeInterface instead
-     */
-    public function initRuntime(Twig_Environment $environment);
-
-    /**
-     * Returns the token parser instances to add to the existing list.
-     *
-     * @return Twig_TokenParserInterface[]
-     */
-    public function getTokenParsers();
-
-    /**
-     * Returns the node visitor instances to add to the existing list.
-     *
-     * @return Twig_NodeVisitorInterface[]
-     */
-    public function getNodeVisitors();
-
-    /**
-     * Returns a list of filters to add to the existing list.
-     *
-     * @return Twig_SimpleFilter[]
-     */
-    public function getFilters();
-
-    /**
-     * Returns a list of tests to add to the existing list.
-     *
-     * @return Twig_SimpleTest[]
-     */
-    public function getTests();
-
-    /**
-     * Returns a list of functions to add to the existing list.
-     *
-     * @return Twig_SimpleFunction[]
-     */
-    public function getFunctions();
-
-    /**
-     * Returns a list of operators to add to the existing list.
-     *
-     * @return array<array> First array of unary operators, second array of binary operators
-     */
-    public function getOperators();
-
-    /**
-     * Returns a list of global variables to add to the existing list.
-     *
-     * @return array An array of global variables
-     *
-     * @deprecated since 1.23 (to be removed in 2.0), implement Twig_Extension_GlobalsInterface instead
-     */
-    public function getGlobals();
-
-    /**
-     * Returns the name of the extension.
-     *
-     * @return string The extension name
-     *
-     * @deprecated since 1.26 (to be removed in 2.0), not used anymore internally
-     */
-    public function getName();
-}
-
-class_alias('Twig_ExtensionInterface', 'Twig\Extension\ExtensionInterface', false);
-class_exists('Twig_Environment');
diff --git a/inc/lib/Twig/FactoryRuntimeLoader.php b/inc/lib/Twig/FactoryRuntimeLoader.php
deleted file mode 100644
index 2cdaded1..00000000
--- a/inc/lib/Twig/FactoryRuntimeLoader.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Lazy loads the runtime implementations for a Twig element.
- *
- * @author Robin Chalas <robin.chalas@gmail.com>
- */
-class Twig_FactoryRuntimeLoader implements Twig_RuntimeLoaderInterface
-{
-    private $map;
-
-    /**
-     * @param array $map An array where keys are class names and values factory callables
-     */
-    public function __construct($map = array())
-    {
-        $this->map = $map;
-    }
-
-    public function load($class)
-    {
-        if (isset($this->map[$class])) {
-            $runtimeFactory = $this->map[$class];
-
-            return $runtimeFactory();
-        }
-    }
-}
-
-class_alias('Twig_FactoryRuntimeLoader', 'Twig\RuntimeLoader\FactoryRuntimeLoader', false);
diff --git a/inc/lib/Twig/FileExtensionEscapingStrategy.php b/inc/lib/Twig/FileExtensionEscapingStrategy.php
deleted file mode 100644
index 8f8cd2ee..00000000
--- a/inc/lib/Twig/FileExtensionEscapingStrategy.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Default autoescaping strategy based on file names.
- *
- * This strategy sets the HTML as the default autoescaping strategy,
- * but changes it based on the template name.
- *
- * Note that there is no runtime performance impact as the
- * default autoescaping strategy is set at compilation time.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_FileExtensionEscapingStrategy
-{
-    /**
-     * Guesses the best autoescaping strategy based on the file name.
-     *
-     * @param string $name The template name
-     *
-     * @return string|false The escaping strategy name to use or false to disable
-     */
-    public static function guess($name)
-    {
-        if (in_array(substr($name, -1), array('/', '\\'))) {
-            return 'html'; // return html for directories
-        }
-
-        if ('.twig' === substr($name, -5)) {
-            $name = substr($name, 0, -5);
-        }
-
-        $extension = pathinfo($name, PATHINFO_EXTENSION);
-
-        switch ($extension) {
-            case 'js':
-                return 'js';
-
-            case 'css':
-                return 'css';
-
-            case 'txt':
-                return false;
-
-            default:
-                return 'html';
-        }
-    }
-}
-
-class_alias('Twig_FileExtensionEscapingStrategy', 'Twig\FileExtensionEscapingStrategy', false);
diff --git a/inc/lib/Twig/Filter.php b/inc/lib/Twig/Filter.php
deleted file mode 100644
index 893d75d1..00000000
--- a/inc/lib/Twig/Filter.php
+++ /dev/null
@@ -1,84 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Filter class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFilter instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a template filter.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-abstract class Twig_Filter implements Twig_FilterInterface, Twig_FilterCallableInterface
-{
-    protected $options;
-    protected $arguments = array();
-
-    public function __construct(array $options = array())
-    {
-        $this->options = array_merge(array(
-            'needs_environment' => false,
-            'needs_context' => false,
-            'pre_escape' => null,
-            'preserves_safety' => null,
-            'callable' => null,
-        ), $options);
-    }
-
-    public function setArguments($arguments)
-    {
-        $this->arguments = $arguments;
-    }
-
-    public function getArguments()
-    {
-        return $this->arguments;
-    }
-
-    public function needsEnvironment()
-    {
-        return $this->options['needs_environment'];
-    }
-
-    public function needsContext()
-    {
-        return $this->options['needs_context'];
-    }
-
-    public function getSafe(Twig_Node $filterArgs)
-    {
-        if (isset($this->options['is_safe'])) {
-            return $this->options['is_safe'];
-        }
-
-        if (isset($this->options['is_safe_callback'])) {
-            return call_user_func($this->options['is_safe_callback'], $filterArgs);
-        }
-    }
-
-    public function getPreservesSafety()
-    {
-        return $this->options['preserves_safety'];
-    }
-
-    public function getPreEscape()
-    {
-        return $this->options['pre_escape'];
-    }
-
-    public function getCallable()
-    {
-        return $this->options['callable'];
-    }
-}
diff --git a/inc/lib/Twig/Filter/Function.php b/inc/lib/Twig/Filter/Function.php
deleted file mode 100644
index 71b16554..00000000
--- a/inc/lib/Twig/Filter/Function.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Filter_Function class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFilter instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a function template filter.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Filter_Function extends Twig_Filter
-{
-    protected $function;
-
-    public function __construct($function, array $options = array())
-    {
-        $options['callable'] = $function;
-
-        parent::__construct($options);
-
-        $this->function = $function;
-    }
-
-    public function compile()
-    {
-        return $this->function;
-    }
-}
diff --git a/inc/lib/Twig/Filter/Method.php b/inc/lib/Twig/Filter/Method.php
deleted file mode 100644
index 1b75676c..00000000
--- a/inc/lib/Twig/Filter/Method.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Filter_Method class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFilter instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a method template filter.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Filter_Method extends Twig_Filter
-{
-    protected $extension;
-    protected $method;
-
-    public function __construct(Twig_ExtensionInterface $extension, $method, array $options = array())
-    {
-        $options['callable'] = array($extension, $method);
-
-        parent::__construct($options);
-
-        $this->extension = $extension;
-        $this->method = $method;
-    }
-
-    public function compile()
-    {
-        return sprintf('$this->env->getExtension(\'%s\')->%s', get_class($this->extension), $this->method);
-    }
-}
diff --git a/inc/lib/Twig/Filter/Node.php b/inc/lib/Twig/Filter/Node.php
deleted file mode 100644
index 3e6b12ef..00000000
--- a/inc/lib/Twig/Filter/Node.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Filter_Node class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFilter instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a template filter as a node.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Filter_Node extends Twig_Filter
-{
-    protected $class;
-
-    public function __construct($class, array $options = array())
-    {
-        parent::__construct($options);
-
-        $this->class = $class;
-    }
-
-    public function getClass()
-    {
-        return $this->class;
-    }
-
-    public function compile()
-    {
-    }
-}
diff --git a/inc/lib/Twig/FilterCallableInterface.php b/inc/lib/Twig/FilterCallableInterface.php
deleted file mode 100644
index 21b028c4..00000000
--- a/inc/lib/Twig/FilterCallableInterface.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a callable template filter.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_FilterCallableInterface
-{
-    public function getCallable();
-}
diff --git a/inc/lib/Twig/FilterInterface.php b/inc/lib/Twig/FilterInterface.php
deleted file mode 100644
index 9d7e9ab6..00000000
--- a/inc/lib/Twig/FilterInterface.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template filter.
- *
- * Use Twig_SimpleFilter instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_FilterInterface
-{
-    /**
-     * Compiles a filter.
-     *
-     * @return string The PHP code for the filter
-     */
-    public function compile();
-
-    public function needsEnvironment();
-
-    public function needsContext();
-
-    public function getSafe(Twig_Node $filterArgs);
-
-    public function getPreservesSafety();
-
-    public function getPreEscape();
-
-    public function setArguments($arguments);
-
-    public function getArguments();
-}
diff --git a/inc/lib/Twig/Function.php b/inc/lib/Twig/Function.php
deleted file mode 100644
index 9dc16e90..00000000
--- a/inc/lib/Twig/Function.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Function class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFunction instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a template function.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-abstract class Twig_Function implements Twig_FunctionInterface, Twig_FunctionCallableInterface
-{
-    protected $options;
-    protected $arguments = array();
-
-    public function __construct(array $options = array())
-    {
-        $this->options = array_merge(array(
-            'needs_environment' => false,
-            'needs_context' => false,
-            'callable' => null,
-        ), $options);
-    }
-
-    public function setArguments($arguments)
-    {
-        $this->arguments = $arguments;
-    }
-
-    public function getArguments()
-    {
-        return $this->arguments;
-    }
-
-    public function needsEnvironment()
-    {
-        return $this->options['needs_environment'];
-    }
-
-    public function needsContext()
-    {
-        return $this->options['needs_context'];
-    }
-
-    public function getSafe(Twig_Node $functionArgs)
-    {
-        if (isset($this->options['is_safe'])) {
-            return $this->options['is_safe'];
-        }
-
-        if (isset($this->options['is_safe_callback'])) {
-            return call_user_func($this->options['is_safe_callback'], $functionArgs);
-        }
-
-        return array();
-    }
-
-    public function getCallable()
-    {
-        return $this->options['callable'];
-    }
-}
diff --git a/inc/lib/Twig/Function/Function.php b/inc/lib/Twig/Function/Function.php
deleted file mode 100644
index 97c0eb77..00000000
--- a/inc/lib/Twig/Function/Function.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Arnaud Le Blanc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Function_Function class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFunction instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a function template function.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Function_Function extends Twig_Function
-{
-    protected $function;
-
-    public function __construct($function, array $options = array())
-    {
-        $options['callable'] = $function;
-
-        parent::__construct($options);
-
-        $this->function = $function;
-    }
-
-    public function compile()
-    {
-        return $this->function;
-    }
-}
diff --git a/inc/lib/Twig/Function/Method.php b/inc/lib/Twig/Function/Method.php
deleted file mode 100644
index 4299e118..00000000
--- a/inc/lib/Twig/Function/Method.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Arnaud Le Blanc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Function_Method class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFunction instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a method template function.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Function_Method extends Twig_Function
-{
-    protected $extension;
-    protected $method;
-
-    public function __construct(Twig_ExtensionInterface $extension, $method, array $options = array())
-    {
-        $options['callable'] = array($extension, $method);
-
-        parent::__construct($options);
-
-        $this->extension = $extension;
-        $this->method = $method;
-    }
-
-    public function compile()
-    {
-        return sprintf('$this->env->getExtension(\'%s\')->%s', get_class($this->extension), $this->method);
-    }
-}
diff --git a/inc/lib/Twig/Function/Node.php b/inc/lib/Twig/Function/Node.php
deleted file mode 100644
index 0adc5d93..00000000
--- a/inc/lib/Twig/Function/Node.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Function_Node class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleFunction instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a template function as a node.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Function_Node extends Twig_Function
-{
-    protected $class;
-
-    public function __construct($class, array $options = array())
-    {
-        parent::__construct($options);
-
-        $this->class = $class;
-    }
-
-    public function getClass()
-    {
-        return $this->class;
-    }
-
-    public function compile()
-    {
-    }
-}
diff --git a/inc/lib/Twig/FunctionCallableInterface.php b/inc/lib/Twig/FunctionCallableInterface.php
deleted file mode 100644
index d23d6917..00000000
--- a/inc/lib/Twig/FunctionCallableInterface.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a callable template function.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_FunctionCallableInterface
-{
-    public function getCallable();
-}
diff --git a/inc/lib/Twig/FunctionInterface.php b/inc/lib/Twig/FunctionInterface.php
deleted file mode 100644
index 00d4f95c..00000000
--- a/inc/lib/Twig/FunctionInterface.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Arnaud Le Blanc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template function.
- *
- * Use Twig_SimpleFunction instead.
- *
- * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_FunctionInterface
-{
-    /**
-     * Compiles a function.
-     *
-     * @return string The PHP code for the function
-     */
-    public function compile();
-
-    public function needsEnvironment();
-
-    public function needsContext();
-
-    public function getSafe(Twig_Node $filterArgs);
-
-    public function setArguments($arguments);
-
-    public function getArguments();
-}
diff --git a/inc/lib/Twig/Lexer.php b/inc/lib/Twig/Lexer.php
deleted file mode 100644
index 41211eb2..00000000
--- a/inc/lib/Twig/Lexer.php
+++ /dev/null
@@ -1,427 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Lexes a template string.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Lexer implements Twig_LexerInterface
-{
-    protected $tokens;
-    protected $code;
-    protected $cursor;
-    protected $lineno;
-    protected $end;
-    protected $state;
-    protected $states;
-    protected $brackets;
-    protected $env;
-    // to be renamed to $name in 2.0 (where it is private)
-    protected $filename;
-    protected $options;
-    protected $regexes;
-    protected $position;
-    protected $positions;
-    protected $currentVarBlockLine;
-
-    private $source;
-
-    const STATE_DATA = 0;
-    const STATE_BLOCK = 1;
-    const STATE_VAR = 2;
-    const STATE_STRING = 3;
-    const STATE_INTERPOLATION = 4;
-
-    const REGEX_NAME = '/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A';
-    const REGEX_NUMBER = '/[0-9]+(?:\.[0-9]+)?/A';
-    const REGEX_STRING = '/"([^#"\\\\]*(?:\\\\.[^#"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\'/As';
-    const REGEX_DQ_STRING_DELIM = '/"/A';
-    const REGEX_DQ_STRING_PART = '/[^#"\\\\]*(?:(?:\\\\.|#(?!\{))[^#"\\\\]*)*/As';
-    const PUNCTUATION = '()[]{}?:.,|';
-
-    public function __construct(Twig_Environment $env, array $options = array())
-    {
-        $this->env = $env;
-
-        $this->options = array_merge(array(
-            'tag_comment' => array('{#', '#}'),
-            'tag_block' => array('{%', '%}'),
-            'tag_variable' => array('{{', '}}'),
-            'whitespace_trim' => '-',
-            'interpolation' => array('#{', '}'),
-        ), $options);
-
-        $this->regexes = array(
-            'lex_var' => '/\s*'.preg_quote($this->options['whitespace_trim'].$this->options['tag_variable'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_variable'][1], '/').'/A',
-            'lex_block' => '/\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')\n?/A',
-            'lex_raw_data' => '/('.preg_quote($this->options['tag_block'][0].$this->options['whitespace_trim'], '/').'|'.preg_quote($this->options['tag_block'][0], '/').')\s*(?:end%s)\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')/s',
-            'operator' => $this->getOperatorRegex(),
-            'lex_comment' => '/(?:'.preg_quote($this->options['whitespace_trim'], '/').preg_quote($this->options['tag_comment'][1], '/').'\s*|'.preg_quote($this->options['tag_comment'][1], '/').')\n?/s',
-            'lex_block_raw' => '/\s*(raw|verbatim)\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')/As',
-            'lex_block_line' => '/\s*line\s+(\d+)\s*'.preg_quote($this->options['tag_block'][1], '/').'/As',
-            'lex_tokens_start' => '/('.preg_quote($this->options['tag_variable'][0], '/').'|'.preg_quote($this->options['tag_block'][0], '/').'|'.preg_quote($this->options['tag_comment'][0], '/').')('.preg_quote($this->options['whitespace_trim'], '/').')?/s',
-            'interpolation_start' => '/'.preg_quote($this->options['interpolation'][0], '/').'\s*/A',
-            'interpolation_end' => '/\s*'.preg_quote($this->options['interpolation'][1], '/').'/A',
-        );
-    }
-
-    public function tokenize($code, $name = null)
-    {
-        if (!$code instanceof Twig_Source) {
-            @trigger_error(sprintf('Passing a string as the $code argument of %s() is deprecated since version 1.27 and will be removed in 2.0. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
-            $this->source = new Twig_Source($code, $name);
-        } else {
-            $this->source = $code;
-        }
-
-        if (((int) ini_get('mbstring.func_overload')) & 2) {
-            @trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', E_USER_DEPRECATED);
-        }
-
-        if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
-            $mbEncoding = mb_internal_encoding();
-            mb_internal_encoding('ASCII');
-        } else {
-            $mbEncoding = null;
-        }
-
-        $this->code = str_replace(array("\r\n", "\r"), "\n", $this->source->getCode());
-        $this->filename = $this->source->getName();
-        $this->cursor = 0;
-        $this->lineno = 1;
-        $this->end = strlen($this->code);
-        $this->tokens = array();
-        $this->state = self::STATE_DATA;
-        $this->states = array();
-        $this->brackets = array();
-        $this->position = -1;
-
-        // find all token starts in one go
-        preg_match_all($this->regexes['lex_tokens_start'], $this->code, $matches, PREG_OFFSET_CAPTURE);
-        $this->positions = $matches;
-
-        while ($this->cursor < $this->end) {
-            // dispatch to the lexing functions depending
-            // on the current state
-            switch ($this->state) {
-                case self::STATE_DATA:
-                    $this->lexData();
-                    break;
-
-                case self::STATE_BLOCK:
-                    $this->lexBlock();
-                    break;
-
-                case self::STATE_VAR:
-                    $this->lexVar();
-                    break;
-
-                case self::STATE_STRING:
-                    $this->lexString();
-                    break;
-
-                case self::STATE_INTERPOLATION:
-                    $this->lexInterpolation();
-                    break;
-            }
-        }
-
-        $this->pushToken(Twig_Token::EOF_TYPE);
-
-        if (!empty($this->brackets)) {
-            list($expect, $lineno) = array_pop($this->brackets);
-            throw new Twig_Error_Syntax(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
-        }
-
-        if ($mbEncoding) {
-            mb_internal_encoding($mbEncoding);
-        }
-
-        return new Twig_TokenStream($this->tokens, $this->source);
-    }
-
-    protected function lexData()
-    {
-        // if no matches are left we return the rest of the template as simple text token
-        if ($this->position == count($this->positions[0]) - 1) {
-            $this->pushToken(Twig_Token::TEXT_TYPE, substr($this->code, $this->cursor));
-            $this->cursor = $this->end;
-
-            return;
-        }
-
-        // Find the first token after the current cursor
-        $position = $this->positions[0][++$this->position];
-        while ($position[1] < $this->cursor) {
-            if ($this->position == count($this->positions[0]) - 1) {
-                return;
-            }
-            $position = $this->positions[0][++$this->position];
-        }
-
-        // push the template text first
-        $text = $textContent = substr($this->code, $this->cursor, $position[1] - $this->cursor);
-        if (isset($this->positions[2][$this->position][0])) {
-            $text = rtrim($text);
-        }
-        $this->pushToken(Twig_Token::TEXT_TYPE, $text);
-        $this->moveCursor($textContent.$position[0]);
-
-        switch ($this->positions[1][$this->position][0]) {
-            case $this->options['tag_comment'][0]:
-                $this->lexComment();
-                break;
-
-            case $this->options['tag_block'][0]:
-                // raw data?
-                if (preg_match($this->regexes['lex_block_raw'], $this->code, $match, null, $this->cursor)) {
-                    $this->moveCursor($match[0]);
-                    $this->lexRawData($match[1]);
-                // {% line \d+ %}
-                } elseif (preg_match($this->regexes['lex_block_line'], $this->code, $match, null, $this->cursor)) {
-                    $this->moveCursor($match[0]);
-                    $this->lineno = (int) $match[1];
-                } else {
-                    $this->pushToken(Twig_Token::BLOCK_START_TYPE);
-                    $this->pushState(self::STATE_BLOCK);
-                    $this->currentVarBlockLine = $this->lineno;
-                }
-                break;
-
-            case $this->options['tag_variable'][0]:
-                $this->pushToken(Twig_Token::VAR_START_TYPE);
-                $this->pushState(self::STATE_VAR);
-                $this->currentVarBlockLine = $this->lineno;
-                break;
-        }
-    }
-
-    protected function lexBlock()
-    {
-        if (empty($this->brackets) && preg_match($this->regexes['lex_block'], $this->code, $match, null, $this->cursor)) {
-            $this->pushToken(Twig_Token::BLOCK_END_TYPE);
-            $this->moveCursor($match[0]);
-            $this->popState();
-        } else {
-            $this->lexExpression();
-        }
-    }
-
-    protected function lexVar()
-    {
-        if (empty($this->brackets) && preg_match($this->regexes['lex_var'], $this->code, $match, null, $this->cursor)) {
-            $this->pushToken(Twig_Token::VAR_END_TYPE);
-            $this->moveCursor($match[0]);
-            $this->popState();
-        } else {
-            $this->lexExpression();
-        }
-    }
-
-    protected function lexExpression()
-    {
-        // whitespace
-        if (preg_match('/\s+/A', $this->code, $match, null, $this->cursor)) {
-            $this->moveCursor($match[0]);
-
-            if ($this->cursor >= $this->end) {
-                throw new Twig_Error_Syntax(sprintf('Unclosed "%s".', self::STATE_BLOCK === $this->state ? 'block' : 'variable'), $this->currentVarBlockLine, $this->source);
-            }
-        }
-
-        // operators
-        if (preg_match($this->regexes['operator'], $this->code, $match, null, $this->cursor)) {
-            $this->pushToken(Twig_Token::OPERATOR_TYPE, preg_replace('/\s+/', ' ', $match[0]));
-            $this->moveCursor($match[0]);
-        }
-        // names
-        elseif (preg_match(self::REGEX_NAME, $this->code, $match, null, $this->cursor)) {
-            $this->pushToken(Twig_Token::NAME_TYPE, $match[0]);
-            $this->moveCursor($match[0]);
-        }
-        // numbers
-        elseif (preg_match(self::REGEX_NUMBER, $this->code, $match, null, $this->cursor)) {
-            $number = (float) $match[0];  // floats
-            if (ctype_digit($match[0]) && $number <= PHP_INT_MAX) {
-                $number = (int) $match[0]; // integers lower than the maximum
-            }
-            $this->pushToken(Twig_Token::NUMBER_TYPE, $number);
-            $this->moveCursor($match[0]);
-        }
-        // punctuation
-        elseif (false !== strpos(self::PUNCTUATION, $this->code[$this->cursor])) {
-            // opening bracket
-            if (false !== strpos('([{', $this->code[$this->cursor])) {
-                $this->brackets[] = array($this->code[$this->cursor], $this->lineno);
-            }
-            // closing bracket
-            elseif (false !== strpos(')]}', $this->code[$this->cursor])) {
-                if (empty($this->brackets)) {
-                    throw new Twig_Error_Syntax(sprintf('Unexpected "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
-                }
-
-                list($expect, $lineno) = array_pop($this->brackets);
-                if ($this->code[$this->cursor] != strtr($expect, '([{', ')]}')) {
-                    throw new Twig_Error_Syntax(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
-                }
-            }
-
-            $this->pushToken(Twig_Token::PUNCTUATION_TYPE, $this->code[$this->cursor]);
-            ++$this->cursor;
-        }
-        // strings
-        elseif (preg_match(self::REGEX_STRING, $this->code, $match, null, $this->cursor)) {
-            $this->pushToken(Twig_Token::STRING_TYPE, stripcslashes(substr($match[0], 1, -1)));
-            $this->moveCursor($match[0]);
-        }
-        // opening double quoted string
-        elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, null, $this->cursor)) {
-            $this->brackets[] = array('"', $this->lineno);
-            $this->pushState(self::STATE_STRING);
-            $this->moveCursor($match[0]);
-        }
-        // unlexable
-        else {
-            throw new Twig_Error_Syntax(sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
-        }
-    }
-
-    protected function lexRawData($tag)
-    {
-        if ('raw' === $tag) {
-            @trigger_error(sprintf('Twig Tag "raw" is deprecated since version 1.21. Use "verbatim" instead in %s at line %d.', $this->filename, $this->lineno), E_USER_DEPRECATED);
-        }
-
-        if (!preg_match(str_replace('%s', $tag, $this->regexes['lex_raw_data']), $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
-            throw new Twig_Error_Syntax(sprintf('Unexpected end of file: Unclosed "%s" block.', $tag), $this->lineno, $this->source);
-        }
-
-        $text = substr($this->code, $this->cursor, $match[0][1] - $this->cursor);
-        $this->moveCursor($text.$match[0][0]);
-
-        if (false !== strpos($match[1][0], $this->options['whitespace_trim'])) {
-            $text = rtrim($text);
-        }
-
-        $this->pushToken(Twig_Token::TEXT_TYPE, $text);
-    }
-
-    protected function lexComment()
-    {
-        if (!preg_match($this->regexes['lex_comment'], $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
-            throw new Twig_Error_Syntax('Unclosed comment.', $this->lineno, $this->source);
-        }
-
-        $this->moveCursor(substr($this->code, $this->cursor, $match[0][1] - $this->cursor).$match[0][0]);
-    }
-
-    protected function lexString()
-    {
-        if (preg_match($this->regexes['interpolation_start'], $this->code, $match, null, $this->cursor)) {
-            $this->brackets[] = array($this->options['interpolation'][0], $this->lineno);
-            $this->pushToken(Twig_Token::INTERPOLATION_START_TYPE);
-            $this->moveCursor($match[0]);
-            $this->pushState(self::STATE_INTERPOLATION);
-        } elseif (preg_match(self::REGEX_DQ_STRING_PART, $this->code, $match, null, $this->cursor) && strlen($match[0]) > 0) {
-            $this->pushToken(Twig_Token::STRING_TYPE, stripcslashes($match[0]));
-            $this->moveCursor($match[0]);
-        } elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, null, $this->cursor)) {
-            list($expect, $lineno) = array_pop($this->brackets);
-            if ('"' != $this->code[$this->cursor]) {
-                throw new Twig_Error_Syntax(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
-            }
-
-            $this->popState();
-            ++$this->cursor;
-        } else {
-            // unlexable
-            throw new Twig_Error_Syntax(sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
-        }
-    }
-
-    protected function lexInterpolation()
-    {
-        $bracket = end($this->brackets);
-        if ($this->options['interpolation'][0] === $bracket[0] && preg_match($this->regexes['interpolation_end'], $this->code, $match, null, $this->cursor)) {
-            array_pop($this->brackets);
-            $this->pushToken(Twig_Token::INTERPOLATION_END_TYPE);
-            $this->moveCursor($match[0]);
-            $this->popState();
-        } else {
-            $this->lexExpression();
-        }
-    }
-
-    protected function pushToken($type, $value = '')
-    {
-        // do not push empty text tokens
-        if (Twig_Token::TEXT_TYPE === $type && '' === $value) {
-            return;
-        }
-
-        $this->tokens[] = new Twig_Token($type, $value, $this->lineno);
-    }
-
-    protected function moveCursor($text)
-    {
-        $this->cursor += strlen($text);
-        $this->lineno += substr_count($text, "\n");
-    }
-
-    protected function getOperatorRegex()
-    {
-        $operators = array_merge(
-            array('='),
-            array_keys($this->env->getUnaryOperators()),
-            array_keys($this->env->getBinaryOperators())
-        );
-
-        $operators = array_combine($operators, array_map('strlen', $operators));
-        arsort($operators);
-
-        $regex = array();
-        foreach ($operators as $operator => $length) {
-            // an operator that ends with a character must be followed by
-            // a whitespace or a parenthesis
-            if (ctype_alpha($operator[$length - 1])) {
-                $r = preg_quote($operator, '/').'(?=[\s()])';
-            } else {
-                $r = preg_quote($operator, '/');
-            }
-
-            // an operator with a space can be any amount of whitespaces
-            $r = preg_replace('/\s+/', '\s+', $r);
-
-            $regex[] = $r;
-        }
-
-        return '/'.implode('|', $regex).'/A';
-    }
-
-    protected function pushState($state)
-    {
-        $this->states[] = $this->state;
-        $this->state = $state;
-    }
-
-    protected function popState()
-    {
-        if (0 === count($this->states)) {
-            throw new Exception('Cannot pop state without a previous state.');
-        }
-
-        $this->state = array_pop($this->states);
-    }
-}
-
-class_alias('Twig_Lexer', 'Twig\Lexer', false);
diff --git a/inc/lib/Twig/LexerInterface.php b/inc/lib/Twig/LexerInterface.php
deleted file mode 100644
index c10bbfec..00000000
--- a/inc/lib/Twig/LexerInterface.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by lexer classes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_LexerInterface
-{
-    /**
-     * Tokenizes a source code.
-     *
-     * @param string|Twig_Source $code The source code
-     * @param string             $name A unique identifier for the source code
-     *
-     * @return Twig_TokenStream
-     *
-     * @throws Twig_Error_Syntax When the code is syntactically wrong
-     */
-    public function tokenize($code, $name = null);
-}
diff --git a/inc/lib/Twig/Loader/Array.php b/inc/lib/Twig/Loader/Array.php
deleted file mode 100644
index 0aac7690..00000000
--- a/inc/lib/Twig/Loader/Array.php
+++ /dev/null
@@ -1,97 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Loads a template from an array.
- *
- * When using this loader with a cache mechanism, you should know that a new cache
- * key is generated each time a template content "changes" (the cache key being the
- * source code of the template). If you don't want to see your cache grows out of
- * control, you need to take care of clearing the old cache file by yourself.
- *
- * This loader should only be used for unit testing.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Loader_Array implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
-{
-    protected $templates = array();
-
-    /**
-     * @param array $templates An array of templates (keys are the names, and values are the source code)
-     */
-    public function __construct(array $templates = array())
-    {
-        $this->templates = $templates;
-    }
-
-    /**
-     * Adds or overrides a template.
-     *
-     * @param string $name     The template name
-     * @param string $template The template source
-     */
-    public function setTemplate($name, $template)
-    {
-        $this->templates[(string) $name] = $template;
-    }
-
-    public function getSource($name)
-    {
-        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
-
-        $name = (string) $name;
-        if (!isset($this->templates[$name])) {
-            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
-        }
-
-        return $this->templates[$name];
-    }
-
-    public function getSourceContext($name)
-    {
-        $name = (string) $name;
-        if (!isset($this->templates[$name])) {
-            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
-        }
-
-        return new Twig_Source($this->templates[$name], $name);
-    }
-
-    public function exists($name)
-    {
-        return isset($this->templates[(string) $name]);
-    }
-
-    public function getCacheKey($name)
-    {
-        $name = (string) $name;
-        if (!isset($this->templates[$name])) {
-            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
-        }
-
-        return $name.':'.$this->templates[$name];
-    }
-
-    public function isFresh($name, $time)
-    {
-        $name = (string) $name;
-        if (!isset($this->templates[$name])) {
-            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
-        }
-
-        return true;
-    }
-}
-
-class_alias('Twig_Loader_Array', 'Twig\Loader\ArrayLoader', false);
diff --git a/inc/lib/Twig/Loader/Chain.php b/inc/lib/Twig/Loader/Chain.php
deleted file mode 100644
index 59a33796..00000000
--- a/inc/lib/Twig/Loader/Chain.php
+++ /dev/null
@@ -1,151 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Loads templates from other loaders.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
-{
-    private $hasSourceCache = array();
-    protected $loaders = array();
-
-    /**
-     * @param Twig_LoaderInterface[] $loaders
-     */
-    public function __construct(array $loaders = array())
-    {
-        foreach ($loaders as $loader) {
-            $this->addLoader($loader);
-        }
-    }
-
-    public function addLoader(Twig_LoaderInterface $loader)
-    {
-        $this->loaders[] = $loader;
-        $this->hasSourceCache = array();
-    }
-
-    public function getSource($name)
-    {
-        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
-
-        $exceptions = array();
-        foreach ($this->loaders as $loader) {
-            if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
-                continue;
-            }
-
-            try {
-                return $loader->getSource($name);
-            } catch (Twig_Error_Loader $e) {
-                $exceptions[] = $e->getMessage();
-            }
-        }
-
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
-    }
-
-    public function getSourceContext($name)
-    {
-        $exceptions = array();
-        foreach ($this->loaders as $loader) {
-            if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
-                continue;
-            }
-
-            try {
-                if ($loader instanceof Twig_SourceContextLoaderInterface) {
-                    return $loader->getSourceContext($name);
-                }
-
-                return new Twig_Source($loader->getSource($name), $name);
-            } catch (Twig_Error_Loader $e) {
-                $exceptions[] = $e->getMessage();
-            }
-        }
-
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
-    }
-
-    public function exists($name)
-    {
-        $name = (string) $name;
-
-        if (isset($this->hasSourceCache[$name])) {
-            return $this->hasSourceCache[$name];
-        }
-
-        foreach ($this->loaders as $loader) {
-            if ($loader instanceof Twig_ExistsLoaderInterface) {
-                if ($loader->exists($name)) {
-                    return $this->hasSourceCache[$name] = true;
-                }
-
-                continue;
-            }
-
-            try {
-                if ($loader instanceof Twig_SourceContextLoaderInterface) {
-                    $loader->getSourceContext($name);
-                } else {
-                    $loader->getSource($name);
-                }
-
-                return $this->hasSourceCache[$name] = true;
-            } catch (Twig_Error_Loader $e) {
-            }
-        }
-
-        return $this->hasSourceCache[$name] = false;
-    }
-
-    public function getCacheKey($name)
-    {
-        $exceptions = array();
-        foreach ($this->loaders as $loader) {
-            if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
-                continue;
-            }
-
-            try {
-                return $loader->getCacheKey($name);
-            } catch (Twig_Error_Loader $e) {
-                $exceptions[] = get_class($loader).': '.$e->getMessage();
-            }
-        }
-
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
-    }
-
-    public function isFresh($name, $time)
-    {
-        $exceptions = array();
-        foreach ($this->loaders as $loader) {
-            if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
-                continue;
-            }
-
-            try {
-                return $loader->isFresh($name, $time);
-            } catch (Twig_Error_Loader $e) {
-                $exceptions[] = get_class($loader).': '.$e->getMessage();
-            }
-        }
-
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
-    }
-}
-
-class_alias('Twig_Loader_Chain', 'Twig\Loader\ChainLoader', false);
diff --git a/inc/lib/Twig/Loader/Filesystem.php b/inc/lib/Twig/Loader/Filesystem.php
deleted file mode 100644
index 4e8be0d5..00000000
--- a/inc/lib/Twig/Loader/Filesystem.php
+++ /dev/null
@@ -1,290 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Loads template from the filesystem.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
-{
-    /** Identifier of the main namespace. */
-    const MAIN_NAMESPACE = '__main__';
-
-    protected $paths = array();
-    protected $cache = array();
-    protected $errorCache = array();
-
-    private $rootPath;
-
-    /**
-     * @param string|array $paths    A path or an array of paths where to look for templates
-     * @param string|null  $rootPath The root path common to all relative paths (null for getcwd())
-     */
-    public function __construct($paths = array(), $rootPath = null)
-    {
-        $this->rootPath = (null === $rootPath ? getcwd() : $rootPath).DIRECTORY_SEPARATOR;
-        if (false !== $realPath = realpath($rootPath)) {
-            $this->rootPath = $realPath.DIRECTORY_SEPARATOR;
-        }
-
-        if ($paths) {
-            $this->setPaths($paths);
-        }
-    }
-
-    /**
-     * Returns the paths to the templates.
-     *
-     * @param string $namespace A path namespace
-     *
-     * @return array The array of paths where to look for templates
-     */
-    public function getPaths($namespace = self::MAIN_NAMESPACE)
-    {
-        return isset($this->paths[$namespace]) ? $this->paths[$namespace] : array();
-    }
-
-    /**
-     * Returns the path namespaces.
-     *
-     * The main namespace is always defined.
-     *
-     * @return array The array of defined namespaces
-     */
-    public function getNamespaces()
-    {
-        return array_keys($this->paths);
-    }
-
-    /**
-     * Sets the paths where templates are stored.
-     *
-     * @param string|array $paths     A path or an array of paths where to look for templates
-     * @param string       $namespace A path namespace
-     */
-    public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
-    {
-        if (!is_array($paths)) {
-            $paths = array($paths);
-        }
-
-        $this->paths[$namespace] = array();
-        foreach ($paths as $path) {
-            $this->addPath($path, $namespace);
-        }
-    }
-
-    /**
-     * Adds a path where templates are stored.
-     *
-     * @param string $path      A path where to look for templates
-     * @param string $namespace A path namespace
-     *
-     * @throws Twig_Error_Loader
-     */
-    public function addPath($path, $namespace = self::MAIN_NAMESPACE)
-    {
-        // invalidate the cache
-        $this->cache = $this->errorCache = array();
-
-        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
-        if (!is_dir($checkPath)) {
-            throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
-        }
-
-        $this->paths[$namespace][] = rtrim($path, '/\\');
-    }
-
-    /**
-     * Prepends a path where templates are stored.
-     *
-     * @param string $path      A path where to look for templates
-     * @param string $namespace A path namespace
-     *
-     * @throws Twig_Error_Loader
-     */
-    public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
-    {
-        // invalidate the cache
-        $this->cache = $this->errorCache = array();
-
-        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
-        if (!is_dir($checkPath)) {
-            throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
-        }
-
-        $path = rtrim($path, '/\\');
-
-        if (!isset($this->paths[$namespace])) {
-            $this->paths[$namespace][] = $path;
-        } else {
-            array_unshift($this->paths[$namespace], $path);
-        }
-    }
-
-    public function getSource($name)
-    {
-        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
-
-        return file_get_contents($this->findTemplate($name));
-    }
-
-    public function getSourceContext($name)
-    {
-        $path = $this->findTemplate($name);
-
-        return new Twig_Source(file_get_contents($path), $name, $path);
-    }
-
-    public function getCacheKey($name)
-    {
-        $path = $this->findTemplate($name);
-        $len = strlen($this->rootPath);
-        if (0 === strncmp($this->rootPath, $path, $len)) {
-            return substr($path, $len);
-        }
-
-        return $path;
-    }
-
-    public function exists($name)
-    {
-        $name = $this->normalizeName($name);
-
-        if (isset($this->cache[$name])) {
-            return true;
-        }
-
-        try {
-            return false !== $this->findTemplate($name, false);
-        } catch (Twig_Error_Loader $exception) {
-            @trigger_error(sprintf('In %s::findTemplate(), you must accept a second argument that when set to "false" returns "false" instead of throwing an exception. Not supporting this argument is deprecated since version 1.27.', get_class($this)), E_USER_DEPRECATED);
-
-            return false;
-        }
-    }
-
-    public function isFresh($name, $time)
-    {
-        return filemtime($this->findTemplate($name)) < $time;
-    }
-
-    protected function findTemplate($name)
-    {
-        $throw = func_num_args() > 1 ? func_get_arg(1) : true;
-        $name = $this->normalizeName($name);
-
-        if (isset($this->cache[$name])) {
-            return $this->cache[$name];
-        }
-
-        if (isset($this->errorCache[$name])) {
-            if (!$throw) {
-                return false;
-            }
-
-            throw new Twig_Error_Loader($this->errorCache[$name]);
-        }
-
-        $this->validateName($name);
-
-        list($namespace, $shortname) = $this->parseName($name);
-
-        if (!isset($this->paths[$namespace])) {
-            $this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);
-
-            if (!$throw) {
-                return false;
-            }
-
-            throw new Twig_Error_Loader($this->errorCache[$name]);
-        }
-
-        foreach ($this->paths[$namespace] as $path) {
-            if (!$this->isAbsolutePath($path)) {
-                $path = $this->rootPath.'/'.$path;
-            }
-
-            if (is_file($path.'/'.$shortname)) {
-                if (false !== $realpath = realpath($path.'/'.$shortname)) {
-                    return $this->cache[$name] = $realpath;
-                }
-
-                return $this->cache[$name] = $path.'/'.$shortname;
-            }
-        }
-
-        $this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));
-
-        if (!$throw) {
-            return false;
-        }
-
-        throw new Twig_Error_Loader($this->errorCache[$name]);
-    }
-
-    protected function parseName($name, $default = self::MAIN_NAMESPACE)
-    {
-        if (isset($name[0]) && '@' == $name[0]) {
-            if (false === $pos = strpos($name, '/')) {
-                throw new Twig_Error_Loader(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
-            }
-
-            $namespace = substr($name, 1, $pos - 1);
-            $shortname = substr($name, $pos + 1);
-
-            return array($namespace, $shortname);
-        }
-
-        return array($default, $name);
-    }
-
-    protected function normalizeName($name)
-    {
-        return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
-    }
-
-    protected function validateName($name)
-    {
-        if (false !== strpos($name, "\0")) {
-            throw new Twig_Error_Loader('A template name cannot contain NUL bytes.');
-        }
-
-        $name = ltrim($name, '/');
-        $parts = explode('/', $name);
-        $level = 0;
-        foreach ($parts as $part) {
-            if ('..' === $part) {
-                --$level;
-            } elseif ('.' !== $part) {
-                ++$level;
-            }
-
-            if ($level < 0) {
-                throw new Twig_Error_Loader(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
-            }
-        }
-    }
-
-    private function isAbsolutePath($file)
-    {
-        return strspn($file, '/\\', 0, 1)
-            || (strlen($file) > 3 && ctype_alpha($file[0])
-                && ':' === substr($file, 1, 1)
-                && strspn($file, '/\\', 2, 1)
-            )
-            || null !== parse_url($file, PHP_URL_SCHEME)
-        ;
-    }
-}
-
-class_alias('Twig_Loader_Filesystem', 'Twig\Loader\FilesystemLoader', false);
diff --git a/inc/lib/Twig/Loader/String.php b/inc/lib/Twig/Loader/String.php
deleted file mode 100644
index 950bd35b..00000000
--- a/inc/lib/Twig/Loader/String.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Loader_String class is deprecated since version 1.18.1 and will be removed in 2.0. Use Twig_Loader_Array instead or Twig_Environment::createTemplate().', E_USER_DEPRECATED);
-
-/**
- * Loads a template from a string.
- *
- * This loader should NEVER be used. It only exists for Twig internal purposes.
- *
- * When using this loader with a cache mechanism, you should know that a new cache
- * key is generated each time a template content "changes" (the cache key being the
- * source code of the template). If you don't want to see your cache grows out of
- * control, you need to take care of clearing the old cache file by yourself.
- *
- * @deprecated since 1.18.1 (to be removed in 2.0)
- *
- * @internal
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Loader_String implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
-{
-    public function getSource($name)
-    {
-        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
-
-        return $name;
-    }
-
-    public function getSourceContext($name)
-    {
-        return new Twig_Source($name, $name);
-    }
-
-    public function exists($name)
-    {
-        return true;
-    }
-
-    public function getCacheKey($name)
-    {
-        return $name;
-    }
-
-    public function isFresh($name, $time)
-    {
-        return true;
-    }
-}
diff --git a/inc/lib/Twig/LoaderInterface.php b/inc/lib/Twig/LoaderInterface.php
deleted file mode 100644
index 459a70ab..00000000
--- a/inc/lib/Twig/LoaderInterface.php
+++ /dev/null
@@ -1,57 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface all loaders must implement.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_LoaderInterface
-{
-    /**
-     * Gets the source code of a template, given its name.
-     *
-     * @param string $name The name of the template to load
-     *
-     * @return string The template source code
-     *
-     * @throws Twig_Error_Loader When $name is not found
-     *
-     * @deprecated since 1.27 (to be removed in 2.0), implement Twig_SourceContextLoaderInterface
-     */
-    public function getSource($name);
-
-    /**
-     * Gets the cache key to use for the cache for a given template name.
-     *
-     * @param string $name The name of the template to load
-     *
-     * @return string The cache key
-     *
-     * @throws Twig_Error_Loader When $name is not found
-     */
-    public function getCacheKey($name);
-
-    /**
-     * Returns true if the template is still fresh.
-     *
-     * @param string $name The template name
-     * @param int    $time Timestamp of the last modification time of the
-     *                     cached template
-     *
-     * @return bool true if the template is fresh, false otherwise
-     *
-     * @throws Twig_Error_Loader When $name is not found
-     */
-    public function isFresh($name, $time);
-}
-
-class_alias('Twig_LoaderInterface', 'Twig\Loader\LoaderInterface', false);
diff --git a/inc/lib/Twig/Markup.php b/inc/lib/Twig/Markup.php
deleted file mode 100644
index 8591d1f9..00000000
--- a/inc/lib/Twig/Markup.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Marks a content as safe.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Markup implements Countable
-{
-    protected $content;
-    protected $charset;
-
-    public function __construct($content, $charset)
-    {
-        $this->content = (string) $content;
-        $this->charset = $charset;
-    }
-
-    public function __toString()
-    {
-        return $this->content;
-    }
-
-    public function count()
-    {
-        return function_exists('mb_get_info') ? mb_strlen($this->content, $this->charset) : strlen($this->content);
-    }
-}
-
-class_alias('Twig_Markup', 'Twig\Markup', false);
diff --git a/inc/lib/Twig/Node.php b/inc/lib/Twig/Node.php
deleted file mode 100644
index 89ada144..00000000
--- a/inc/lib/Twig/Node.php
+++ /dev/null
@@ -1,256 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a node in the AST.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node implements Twig_NodeInterface
-{
-    protected $nodes;
-    protected $attributes;
-    protected $lineno;
-    protected $tag;
-
-    private $name;
-
-    /**
-     * Constructor.
-     *
-     * The nodes are automatically made available as properties ($this->node).
-     * The attributes are automatically made available as array items ($this['name']).
-     *
-     * @param array  $nodes      An array of named nodes
-     * @param array  $attributes An array of attributes (should not be nodes)
-     * @param int    $lineno     The line number
-     * @param string $tag        The tag name associated with the Node
-     */
-    public function __construct(array $nodes = array(), array $attributes = array(), $lineno = 0, $tag = null)
-    {
-        foreach ($nodes as $name => $node) {
-            if (!$node instanceof Twig_NodeInterface) {
-                @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', is_object($node) ? get_class($node) : null === $node ? 'null' : gettype($node), $name, get_class($this)), E_USER_DEPRECATED);
-            }
-        }
-        $this->nodes = $nodes;
-        $this->attributes = $attributes;
-        $this->lineno = $lineno;
-        $this->tag = $tag;
-    }
-
-    public function __toString()
-    {
-        $attributes = array();
-        foreach ($this->attributes as $name => $value) {
-            $attributes[] = sprintf('%s: %s', $name, str_replace("\n", '', var_export($value, true)));
-        }
-
-        $repr = array(get_class($this).'('.implode(', ', $attributes));
-
-        if (count($this->nodes)) {
-            foreach ($this->nodes as $name => $node) {
-                $len = strlen($name) + 4;
-                $noderepr = array();
-                foreach (explode("\n", (string) $node) as $line) {
-                    $noderepr[] = str_repeat(' ', $len).$line;
-                }
-
-                $repr[] = sprintf('  %s: %s', $name, ltrim(implode("\n", $noderepr)));
-            }
-
-            $repr[] = ')';
-        } else {
-            $repr[0] .= ')';
-        }
-
-        return implode("\n", $repr);
-    }
-
-    /**
-     * @deprecated since 1.16.1 (to be removed in 2.0)
-     */
-    public function toXml($asDom = false)
-    {
-        @trigger_error(sprintf('%s is deprecated since version 1.16.1 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-        $dom = new DOMDocument('1.0', 'UTF-8');
-        $dom->formatOutput = true;
-        $dom->appendChild($xml = $dom->createElement('twig'));
-
-        $xml->appendChild($node = $dom->createElement('node'));
-        $node->setAttribute('class', get_class($this));
-
-        foreach ($this->attributes as $name => $value) {
-            $node->appendChild($attribute = $dom->createElement('attribute'));
-            $attribute->setAttribute('name', $name);
-            $attribute->appendChild($dom->createTextNode($value));
-        }
-
-        foreach ($this->nodes as $name => $n) {
-            if (null === $n) {
-                continue;
-            }
-
-            $child = $n->toXml(true)->getElementsByTagName('node')->item(0);
-            $child = $dom->importNode($child, true);
-            $child->setAttribute('name', $name);
-
-            $node->appendChild($child);
-        }
-
-        return $asDom ? $dom : $dom->saveXML();
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        foreach ($this->nodes as $node) {
-            $node->compile($compiler);
-        }
-    }
-
-    public function getTemplateLine()
-    {
-        return $this->lineno;
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getLine()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getTemplateLine() instead.', E_USER_DEPRECATED);
-
-        return $this->lineno;
-    }
-
-    public function getNodeTag()
-    {
-        return $this->tag;
-    }
-
-    /**
-     * @return bool
-     */
-    public function hasAttribute($name)
-    {
-        return array_key_exists($name, $this->attributes);
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getAttribute($name)
-    {
-        if (!array_key_exists($name, $this->attributes)) {
-            throw new LogicException(sprintf('Attribute "%s" does not exist for Node "%s".', $name, get_class($this)));
-        }
-
-        return $this->attributes[$name];
-    }
-
-    /**
-     * @param string $name
-     * @param mixed  $value
-     */
-    public function setAttribute($name, $value)
-    {
-        $this->attributes[$name] = $value;
-    }
-
-    public function removeAttribute($name)
-    {
-        unset($this->attributes[$name]);
-    }
-
-    /**
-     * @return bool
-     */
-    public function hasNode($name)
-    {
-        return array_key_exists($name, $this->nodes);
-    }
-
-    /**
-     * @return Twig_Node
-     */
-    public function getNode($name)
-    {
-        if (!array_key_exists($name, $this->nodes)) {
-            throw new LogicException(sprintf('Node "%s" does not exist for Node "%s".', $name, get_class($this)));
-        }
-
-        return $this->nodes[$name];
-    }
-
-    public function setNode($name, $node = null)
-    {
-        if (!$node instanceof Twig_NodeInterface) {
-            @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', is_object($node) ? get_class($node) : null === $node ? 'null' : gettype($node), $name, get_class($this)), E_USER_DEPRECATED);
-        }
-
-        $this->nodes[$name] = $node;
-    }
-
-    public function removeNode($name)
-    {
-        unset($this->nodes[$name]);
-    }
-
-    public function count()
-    {
-        return count($this->nodes);
-    }
-
-    public function getIterator()
-    {
-        return new ArrayIterator($this->nodes);
-    }
-
-    public function setTemplateName($name)
-    {
-        $this->name = $name;
-        foreach ($this->nodes as $node) {
-            if (null !== $node) {
-                $node->setTemplateName($name);
-            }
-        }
-    }
-
-    public function getTemplateName()
-    {
-        return $this->name;
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function setFilename($name)
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use setTemplateName() instead.', E_USER_DEPRECATED);
-
-        $this->setTemplateName($name);
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getFilename()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getTemplateName() instead.', E_USER_DEPRECATED);
-
-        return $this->name;
-    }
-}
-
-class_alias('Twig_Node', 'Twig\Node\Node', false);
-class_exists('Twig_Compiler');
diff --git a/inc/lib/Twig/Node/AutoEscape.php b/inc/lib/Twig/Node/AutoEscape.php
deleted file mode 100644
index 17e4e381..00000000
--- a/inc/lib/Twig/Node/AutoEscape.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents an autoescape node.
- *
- * The value is the escaping strategy (can be html, js, ...)
- *
- * The true value is equivalent to html.
- *
- * If autoescaping is disabled, then the value is false.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_AutoEscape extends Twig_Node
-{
-    public function __construct($value, Twig_NodeInterface $body, $lineno, $tag = 'autoescape')
-    {
-        parent::__construct(array('body' => $body), array('value' => $value), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->subcompile($this->getNode('body'));
-    }
-}
-
-class_alias('Twig_Node_AutoEscape', 'Twig\Node\AutoEscapeNode', false);
diff --git a/inc/lib/Twig/Node/Block.php b/inc/lib/Twig/Node/Block.php
deleted file mode 100644
index 91752ad2..00000000
--- a/inc/lib/Twig/Node/Block.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a block node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Block extends Twig_Node
-{
-    public function __construct($name, Twig_NodeInterface $body, $lineno, $tag = null)
-    {
-        parent::__construct(array('body' => $body), array('name' => $name), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write(sprintf("public function block_%s(\$context, array \$blocks = array())\n", $this->getAttribute('name')), "{\n")
-            ->indent()
-        ;
-
-        $compiler
-            ->subcompile($this->getNode('body'))
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Block', 'Twig\Node\BlockNode', false);
diff --git a/inc/lib/Twig/Node/BlockReference.php b/inc/lib/Twig/Node/BlockReference.php
deleted file mode 100644
index 92a9f398..00000000
--- a/inc/lib/Twig/Node/BlockReference.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a block call node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_BlockReference extends Twig_Node implements Twig_NodeOutputInterface
-{
-    public function __construct($name, $lineno, $tag = null)
-    {
-        parent::__construct(array(), array('name' => $name), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write(sprintf("\$this->displayBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
-        ;
-    }
-}
-
-class_alias('Twig_Node_BlockReference', 'Twig\Node\BlockReferenceNode', false);
diff --git a/inc/lib/Twig/Node/Body.php b/inc/lib/Twig/Node/Body.php
deleted file mode 100644
index 07dfef8b..00000000
--- a/inc/lib/Twig/Node/Body.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a body node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Body extends Twig_Node
-{
-}
-
-class_alias('Twig_Node_Body', 'Twig\Node\BodyNode', false);
diff --git a/inc/lib/Twig/Node/CheckSecurity.php b/inc/lib/Twig/Node/CheckSecurity.php
deleted file mode 100644
index 7258acb6..00000000
--- a/inc/lib/Twig/Node/CheckSecurity.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_CheckSecurity extends Twig_Node
-{
-    protected $usedFilters;
-    protected $usedTags;
-    protected $usedFunctions;
-
-    public function __construct(array $usedFilters, array $usedTags, array $usedFunctions)
-    {
-        $this->usedFilters = $usedFilters;
-        $this->usedTags = $usedTags;
-        $this->usedFunctions = $usedFunctions;
-
-        parent::__construct();
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $tags = $filters = $functions = array();
-        foreach (array('tags', 'filters', 'functions') as $type) {
-            foreach ($this->{'used'.ucfirst($type)} as $name => $node) {
-                if ($node instanceof Twig_Node) {
-                    ${$type}[$name] = $node->getTemplateLine();
-                } else {
-                    ${$type}[$node] = null;
-                }
-            }
-        }
-
-        $compiler
-            ->write('$tags = ')->repr(array_filter($tags))->raw(";\n")
-            ->write('$filters = ')->repr(array_filter($filters))->raw(";\n")
-            ->write('$functions = ')->repr(array_filter($functions))->raw(";\n\n")
-            ->write("try {\n")
-            ->indent()
-            ->write("\$this->env->getExtension('Twig_Extension_Sandbox')->checkSecurity(\n")
-            ->indent()
-            ->write(!$tags ? "array(),\n" : "array('".implode("', '", array_keys($tags))."'),\n")
-            ->write(!$filters ? "array(),\n" : "array('".implode("', '", array_keys($filters))."'),\n")
-            ->write(!$functions ? "array()\n" : "array('".implode("', '", array_keys($functions))."')\n")
-            ->outdent()
-            ->write(");\n")
-            ->outdent()
-            ->write("} catch (Twig_Sandbox_SecurityError \$e) {\n")
-            ->indent()
-            ->write("\$e->setSourceContext(\$this->getSourceContext());\n\n")
-            ->write("if (\$e instanceof Twig_Sandbox_SecurityNotAllowedTagError && isset(\$tags[\$e->getTagName()])) {\n")
-            ->indent()
-            ->write("\$e->setTemplateLine(\$tags[\$e->getTagName()]);\n")
-            ->outdent()
-            ->write("} elseif (\$e instanceof Twig_Sandbox_SecurityNotAllowedFilterError && isset(\$filters[\$e->getFilterName()])) {\n")
-            ->indent()
-            ->write("\$e->setTemplateLine(\$filters[\$e->getFilterName()]);\n")
-            ->outdent()
-            ->write("} elseif (\$e instanceof Twig_Sandbox_SecurityNotAllowedFunctionError && isset(\$functions[\$e->getFunctionName()])) {\n")
-            ->indent()
-            ->write("\$e->setTemplateLine(\$functions[\$e->getFunctionName()]);\n")
-            ->outdent()
-            ->write("}\n\n")
-            ->write("throw \$e;\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_CheckSecurity', 'Twig\Node\CheckSecurityNode', false);
diff --git a/inc/lib/Twig/Node/Do.php b/inc/lib/Twig/Node/Do.php
deleted file mode 100644
index cdd7e77a..00000000
--- a/inc/lib/Twig/Node/Do.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a do node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Do extends Twig_Node
-{
-    public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)
-    {
-        parent::__construct(array('expr' => $expr), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write('')
-            ->subcompile($this->getNode('expr'))
-            ->raw(";\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Do', 'Twig\Node\DoNode', false);
diff --git a/inc/lib/Twig/Node/Embed.php b/inc/lib/Twig/Node/Embed.php
deleted file mode 100644
index 3785d3a9..00000000
--- a/inc/lib/Twig/Node/Embed.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents an embed node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Embed extends Twig_Node_Include
-{
-    // we don't inject the module to avoid node visitors to traverse it twice (as it will be already visited in the main module)
-    public function __construct($name, $index, Twig_Node_Expression $variables = null, $only = false, $ignoreMissing = false, $lineno, $tag = null)
-    {
-        parent::__construct(new Twig_Node_Expression_Constant('not_used', $lineno), $variables, $only, $ignoreMissing, $lineno, $tag);
-
-        $this->setAttribute('name', $name);
-        // to be removed in 2.0, used name instead
-        $this->setAttribute('filename', $name);
-        $this->setAttribute('index', $index);
-    }
-
-    protected function addGetTemplate(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write('$this->loadTemplate(')
-            ->string($this->getAttribute('name'))
-            ->raw(', ')
-            ->repr($this->getTemplateName())
-            ->raw(', ')
-            ->repr($this->getTemplateLine())
-            ->raw(', ')
-            ->string($this->getAttribute('index'))
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Embed', 'Twig\Node\EmbedNode', false);
diff --git a/inc/lib/Twig/Node/Expression.php b/inc/lib/Twig/Node/Expression.php
deleted file mode 100644
index a99c4e63..00000000
--- a/inc/lib/Twig/Node/Expression.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Abstract class for all nodes that represents an expression.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-abstract class Twig_Node_Expression extends Twig_Node
-{
-}
-
-class_alias('Twig_Node_Expression', 'Twig\Node\Expression\AbstractExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Array.php b/inc/lib/Twig/Node/Expression/Array.php
deleted file mode 100644
index 0e77bb08..00000000
--- a/inc/lib/Twig/Node/Expression/Array.php
+++ /dev/null
@@ -1,83 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Array extends Twig_Node_Expression
-{
-    protected $index;
-
-    public function __construct(array $elements, $lineno)
-    {
-        parent::__construct($elements, array(), $lineno);
-
-        $this->index = -1;
-        foreach ($this->getKeyValuePairs() as $pair) {
-            if ($pair['key'] instanceof Twig_Node_Expression_Constant && ctype_digit((string) $pair['key']->getAttribute('value')) && $pair['key']->getAttribute('value') > $this->index) {
-                $this->index = $pair['key']->getAttribute('value');
-            }
-        }
-    }
-
-    public function getKeyValuePairs()
-    {
-        $pairs = array();
-
-        foreach (array_chunk($this->nodes, 2) as $pair) {
-            $pairs[] = array(
-                'key' => $pair[0],
-                'value' => $pair[1],
-            );
-        }
-
-        return $pairs;
-    }
-
-    public function hasElement(Twig_Node_Expression $key)
-    {
-        foreach ($this->getKeyValuePairs() as $pair) {
-            // we compare the string representation of the keys
-            // to avoid comparing the line numbers which are not relevant here.
-            if ((string) $key === (string) $pair['key']) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    public function addElement(Twig_Node_Expression $value, Twig_Node_Expression $key = null)
-    {
-        if (null === $key) {
-            $key = new Twig_Node_Expression_Constant(++$this->index, $value->getTemplateLine());
-        }
-
-        array_push($this->nodes, $key, $value);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->raw('array(');
-        $first = true;
-        foreach ($this->getKeyValuePairs() as $pair) {
-            if (!$first) {
-                $compiler->raw(', ');
-            }
-            $first = false;
-
-            $compiler
-                ->subcompile($pair['key'])
-                ->raw(' => ')
-                ->subcompile($pair['value'])
-            ;
-        }
-        $compiler->raw(')');
-    }
-}
-
-class_alias('Twig_Node_Expression_Array', 'Twig\Node\Expression\ArrayExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/AssignName.php b/inc/lib/Twig/Node/Expression/AssignName.php
deleted file mode 100644
index 2e6b4c7c..00000000
--- a/inc/lib/Twig/Node/Expression/AssignName.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-class Twig_Node_Expression_AssignName extends Twig_Node_Expression_Name
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('$context[')
-            ->string($this->getAttribute('name'))
-            ->raw(']')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_AssignName', 'Twig\Node\Expression\AssignNameExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary.php b/inc/lib/Twig/Node/Expression/Binary.php
deleted file mode 100644
index 2b545d98..00000000
--- a/inc/lib/Twig/Node/Expression/Binary.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-abstract class Twig_Node_Expression_Binary extends Twig_Node_Expression
-{
-    public function __construct(Twig_NodeInterface $left, Twig_NodeInterface $right, $lineno)
-    {
-        parent::__construct(array('left' => $left, 'right' => $right), array(), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('left'))
-            ->raw(' ')
-        ;
-        $this->operator($compiler);
-        $compiler
-            ->raw(' ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
-    abstract public function operator(Twig_Compiler $compiler);
-}
-
-class_alias('Twig_Node_Expression_Binary', 'Twig\Node\Expression\Binary\AbstractBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Add.php b/inc/lib/Twig/Node/Expression/Binary/Add.php
deleted file mode 100644
index 5a09d836..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Add.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Add extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('+');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Add', 'Twig\Node\Expression\Binary\AddBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/And.php b/inc/lib/Twig/Node/Expression/Binary/And.php
deleted file mode 100644
index 9ffddce6..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/And.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_And extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('&&');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_And', 'Twig\Node\Expression\Binary\AndBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php
deleted file mode 100644
index e46e9ebf..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_BitwiseAnd extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('&');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_BitwiseAnd', 'Twig\Node\Expression\Binary\BitwiseAndBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php
deleted file mode 100644
index 5d7f1b7c..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_BitwiseOr extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('|');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_BitwiseOr', 'Twig\Node\Expression\Binary\BitwiseOrBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php
deleted file mode 100644
index 82edf516..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_BitwiseXor extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('^');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_BitwiseXor', 'Twig\Node\Expression\Binary\BitwiseXorBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Concat.php b/inc/lib/Twig/Node/Expression/Binary/Concat.php
deleted file mode 100644
index 91abca60..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Concat.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Concat extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('.');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Concat', 'Twig\Node\Expression\Binary\ConcatBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Div.php b/inc/lib/Twig/Node/Expression/Binary/Div.php
deleted file mode 100644
index 38ffa30c..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Div.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Div extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('/');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Div', 'Twig\Node\Expression\Binary\DivBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/EndsWith.php b/inc/lib/Twig/Node/Expression/Binary/EndsWith.php
deleted file mode 100644
index 85c52937..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/EndsWith.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_EndsWith extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $left = $compiler->getVarName();
-        $right = $compiler->getVarName();
-        $compiler
-            ->raw(sprintf('(is_string($%s = ', $left))
-            ->subcompile($this->getNode('left'))
-            ->raw(sprintf(') && is_string($%s = ', $right))
-            ->subcompile($this->getNode('right'))
-            ->raw(sprintf(') && (\'\' === $%2$s || $%2$s === substr($%1$s, -strlen($%2$s))))', $left, $right))
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_EndsWith', 'Twig\Node\Expression\Binary\EndsWithBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Equal.php b/inc/lib/Twig/Node/Expression/Binary/Equal.php
deleted file mode 100644
index a6a6946b..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Equal.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Equal extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('==');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Equal', 'Twig\Node\Expression\Binary\EqualBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php b/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php
deleted file mode 100644
index 7393bcb8..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_FloorDiv extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->raw('(int) floor(');
-        parent::compile($compiler);
-        $compiler->raw(')');
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('/');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_FloorDiv', 'Twig\Node\Expression\Binary\FloorDivBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Greater.php b/inc/lib/Twig/Node/Expression/Binary/Greater.php
deleted file mode 100644
index 832f9797..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Greater.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Greater extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('>');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Greater', 'Twig\Node\Expression\Binary\GreaterBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php b/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php
deleted file mode 100644
index c5f76245..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_GreaterEqual extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('>=');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_GreaterEqual', 'Twig\Node\Expression\Binary\GreaterEqualBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/In.php b/inc/lib/Twig/Node/Expression/Binary/In.php
deleted file mode 100644
index af112448..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/In.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_In extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('twig_in_filter(')
-            ->subcompile($this->getNode('left'))
-            ->raw(', ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('in');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_In', 'Twig\Node\Expression\Binary\InBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Less.php b/inc/lib/Twig/Node/Expression/Binary/Less.php
deleted file mode 100644
index ab8fc1f9..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Less.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Less extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('<');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Less', 'Twig\Node\Expression\Binary\LessBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/LessEqual.php b/inc/lib/Twig/Node/Expression/Binary/LessEqual.php
deleted file mode 100644
index 71a279e9..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/LessEqual.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_LessEqual extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('<=');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_LessEqual', 'Twig\Node\Expression\Binary\LessEqualBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Matches.php b/inc/lib/Twig/Node/Expression/Binary/Matches.php
deleted file mode 100644
index 5cb85584..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Matches.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Matches extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('preg_match(')
-            ->subcompile($this->getNode('right'))
-            ->raw(', ')
-            ->subcompile($this->getNode('left'))
-            ->raw(')')
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Matches', 'Twig\Node\Expression\Binary\MatchesBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Mod.php b/inc/lib/Twig/Node/Expression/Binary/Mod.php
deleted file mode 100644
index 28109633..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Mod.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Mod extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('%');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Mod', 'Twig\Node\Expression\Binary\ModBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Mul.php b/inc/lib/Twig/Node/Expression/Binary/Mul.php
deleted file mode 100644
index 790c6a22..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Mul.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Mul extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('*');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Mul', 'Twig\Node\Expression\Binary\MulBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/NotEqual.php b/inc/lib/Twig/Node/Expression/Binary/NotEqual.php
deleted file mode 100644
index bb45c9ed..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/NotEqual.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_NotEqual extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('!=');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_NotEqual', 'Twig\Node\Expression\Binary\NotEqualBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/NotIn.php b/inc/lib/Twig/Node/Expression/Binary/NotIn.php
deleted file mode 100644
index 9dedf92f..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/NotIn.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_NotIn extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('!twig_in_filter(')
-            ->subcompile($this->getNode('left'))
-            ->raw(', ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('not in');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_NotIn', 'Twig\Node\Expression\Binary\NotInBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Or.php b/inc/lib/Twig/Node/Expression/Binary/Or.php
deleted file mode 100644
index dc9eece1..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Or.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Or extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('||');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Or', 'Twig\Node\Expression\Binary\OrBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Power.php b/inc/lib/Twig/Node/Expression/Binary/Power.php
deleted file mode 100644
index d24777bd..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Power.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Power extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        if (PHP_VERSION_ID >= 50600) {
-            return parent::compile($compiler);
-        }
-
-        $compiler
-            ->raw('pow(')
-            ->subcompile($this->getNode('left'))
-            ->raw(', ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('**');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Power', 'Twig\Node\Expression\Binary\PowerBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Range.php b/inc/lib/Twig/Node/Expression/Binary/Range.php
deleted file mode 100644
index 187f6765..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Range.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Range extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('range(')
-            ->subcompile($this->getNode('left'))
-            ->raw(', ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('..');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Range', 'Twig\Node\Expression\Binary\RangeBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/StartsWith.php b/inc/lib/Twig/Node/Expression/Binary/StartsWith.php
deleted file mode 100644
index 7e43b8de..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/StartsWith.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_StartsWith extends Twig_Node_Expression_Binary
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $left = $compiler->getVarName();
-        $right = $compiler->getVarName();
-        $compiler
-            ->raw(sprintf('(is_string($%s = ', $left))
-            ->subcompile($this->getNode('left'))
-            ->raw(sprintf(') && is_string($%s = ', $right))
-            ->subcompile($this->getNode('right'))
-            ->raw(sprintf(') && (\'\' === $%2$s || 0 === strpos($%1$s, $%2$s)))', $left, $right))
-        ;
-    }
-
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_StartsWith', 'Twig\Node\Expression\Binary\StartsWithBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/Binary/Sub.php b/inc/lib/Twig/Node/Expression/Binary/Sub.php
deleted file mode 100644
index cff8ed07..00000000
--- a/inc/lib/Twig/Node/Expression/Binary/Sub.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Binary_Sub extends Twig_Node_Expression_Binary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        return $compiler->raw('-');
-    }
-}
-
-class_alias('Twig_Node_Expression_Binary_Sub', 'Twig\Node\Expression\Binary\SubBinary', false);
diff --git a/inc/lib/Twig/Node/Expression/BlockReference.php b/inc/lib/Twig/Node/Expression/BlockReference.php
deleted file mode 100644
index 37a3983d..00000000
--- a/inc/lib/Twig/Node/Expression/BlockReference.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a block call node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_BlockReference extends Twig_Node_Expression
-{
-    /**
-     * @param Twig_Node|null $template
-     */
-    public function __construct(Twig_NodeInterface $name, $template = null, $lineno, $tag = null)
-    {
-        if (is_bool($template)) {
-            @trigger_error(sprintf('The %s method "$asString" argument is deprecated since version 1.28 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
-
-            $template = null;
-        }
-
-        $nodes = array('name' => $name);
-        if (null !== $template) {
-            $nodes['template'] = $template;
-        }
-
-        parent::__construct($nodes, array('is_defined_test' => false, 'output' => false), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        if ($this->getAttribute('is_defined_test')) {
-            $this->compileTemplateCall($compiler, 'hasBlock');
-        } else {
-            if ($this->getAttribute('output')) {
-                $compiler->addDebugInfo($this);
-
-                $this
-                    ->compileTemplateCall($compiler, 'displayBlock')
-                    ->raw(";\n");
-            } else {
-                $this->compileTemplateCall($compiler, 'renderBlock');
-            }
-        }
-    }
-
-    private function compileTemplateCall(Twig_Compiler $compiler, $method)
-    {
-        if (!$this->hasNode('template')) {
-            $compiler->write('$this');
-        } else {
-            $compiler
-                ->write('$this->loadTemplate(')
-                ->subcompile($this->getNode('template'))
-                ->raw(', ')
-                ->repr($this->getTemplateName())
-                ->raw(', ')
-                ->repr($this->getTemplateLine())
-                ->raw(')')
-            ;
-        }
-
-        $compiler->raw(sprintf('->%s', $method));
-        $this->compileBlockArguments($compiler);
-
-        return $compiler;
-    }
-
-    private function compileBlockArguments(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('name'))
-            ->raw(', $context');
-
-        if (!$this->hasNode('template')) {
-            $compiler->raw(', $blocks');
-        }
-
-        return $compiler->raw(')');
-    }
-}
-
-class_alias('Twig_Node_Expression_BlockReference', 'Twig\Node\Expression\BlockReferenceExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Call.php b/inc/lib/Twig/Node/Expression/Call.php
deleted file mode 100644
index d962b6a5..00000000
--- a/inc/lib/Twig/Node/Expression/Call.php
+++ /dev/null
@@ -1,291 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
-{
-    private $reflector;
-
-    protected function compileCallable(Twig_Compiler $compiler)
-    {
-        $closingParenthesis = false;
-        if ($this->hasAttribute('callable') && $callable = $this->getAttribute('callable')) {
-            if (is_string($callable) && false === strpos($callable, '::')) {
-                $compiler->raw($callable);
-            } else {
-                list($r, $callable) = $this->reflectCallable($callable);
-                if ($r instanceof ReflectionMethod && is_string($callable[0])) {
-                    if ($r->isStatic()) {
-                        $compiler->raw(sprintf('%s::%s', $callable[0], $callable[1]));
-                    } else {
-                        $compiler->raw(sprintf('$this->env->getRuntime(\'%s\')->%s', $callable[0], $callable[1]));
-                    }
-                } elseif ($r instanceof ReflectionMethod && $callable[0] instanceof Twig_ExtensionInterface) {
-                    $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', get_class($callable[0]), $callable[1]));
-                } else {
-                    $type = ucfirst($this->getAttribute('type'));
-                    $compiler->raw(sprintf('call_user_func_array($this->env->get%s(\'%s\')->getCallable(), array', $type, $this->getAttribute('name')));
-                    $closingParenthesis = true;
-                }
-            }
-        } else {
-            $compiler->raw($this->getAttribute('thing')->compile());
-        }
-
-        $this->compileArguments($compiler);
-
-        if ($closingParenthesis) {
-            $compiler->raw(')');
-        }
-    }
-
-    protected function compileArguments(Twig_Compiler $compiler)
-    {
-        $compiler->raw('(');
-
-        $first = true;
-
-        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
-            $compiler->raw('$this->env');
-            $first = false;
-        }
-
-        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
-            if (!$first) {
-                $compiler->raw(', ');
-            }
-            $compiler->raw('$context');
-            $first = false;
-        }
-
-        if ($this->hasAttribute('arguments')) {
-            foreach ($this->getAttribute('arguments') as $argument) {
-                if (!$first) {
-                    $compiler->raw(', ');
-                }
-                $compiler->string($argument);
-                $first = false;
-            }
-        }
-
-        if ($this->hasNode('node')) {
-            if (!$first) {
-                $compiler->raw(', ');
-            }
-            $compiler->subcompile($this->getNode('node'));
-            $first = false;
-        }
-
-        if ($this->hasNode('arguments')) {
-            $callable = $this->hasAttribute('callable') ? $this->getAttribute('callable') : null;
-
-            $arguments = $this->getArguments($callable, $this->getNode('arguments'));
-
-            foreach ($arguments as $node) {
-                if (!$first) {
-                    $compiler->raw(', ');
-                }
-                $compiler->subcompile($node);
-                $first = false;
-            }
-        }
-
-        $compiler->raw(')');
-    }
-
-    protected function getArguments($callable, $arguments)
-    {
-        $callType = $this->getAttribute('type');
-        $callName = $this->getAttribute('name');
-
-        $parameters = array();
-        $named = false;
-        foreach ($arguments as $name => $node) {
-            if (!is_int($name)) {
-                $named = true;
-                $name = $this->normalizeName($name);
-            } elseif ($named) {
-                throw new Twig_Error_Syntax(sprintf('Positional arguments cannot be used after named arguments for %s "%s".', $callType, $callName));
-            }
-
-            $parameters[$name] = $node;
-        }
-
-        $isVariadic = $this->hasAttribute('is_variadic') && $this->getAttribute('is_variadic');
-        if (!$named && !$isVariadic) {
-            return $parameters;
-        }
-
-        if (!$callable) {
-            if ($named) {
-                $message = sprintf('Named arguments are not supported for %s "%s".', $callType, $callName);
-            } else {
-                $message = sprintf('Arbitrary positional arguments are not supported for %s "%s".', $callType, $callName);
-            }
-
-            throw new LogicException($message);
-        }
-
-        $callableParameters = $this->getCallableParameters($callable, $isVariadic);
-        $arguments = array();
-        $names = array();
-        $missingArguments = array();
-        $optionalArguments = array();
-        $pos = 0;
-        foreach ($callableParameters as $callableParameter) {
-            $names[] = $name = $this->normalizeName($callableParameter->name);
-
-            if (array_key_exists($name, $parameters)) {
-                if (array_key_exists($pos, $parameters)) {
-                    throw new Twig_Error_Syntax(sprintf('Argument "%s" is defined twice for %s "%s".', $name, $callType, $callName));
-                }
-
-                if (count($missingArguments)) {
-                    throw new Twig_Error_Syntax(sprintf(
-                        'Argument "%s" could not be assigned for %s "%s(%s)" because it is mapped to an internal PHP function which cannot determine default value for optional argument%s "%s".',
-                        $name, $callType, $callName, implode(', ', $names), count($missingArguments) > 1 ? 's' : '', implode('", "', $missingArguments))
-                    );
-                }
-
-                $arguments = array_merge($arguments, $optionalArguments);
-                $arguments[] = $parameters[$name];
-                unset($parameters[$name]);
-                $optionalArguments = array();
-            } elseif (array_key_exists($pos, $parameters)) {
-                $arguments = array_merge($arguments, $optionalArguments);
-                $arguments[] = $parameters[$pos];
-                unset($parameters[$pos]);
-                $optionalArguments = array();
-                ++$pos;
-            } elseif ($callableParameter->isDefaultValueAvailable()) {
-                $optionalArguments[] = new Twig_Node_Expression_Constant($callableParameter->getDefaultValue(), -1);
-            } elseif ($callableParameter->isOptional()) {
-                if (empty($parameters)) {
-                    break;
-                } else {
-                    $missingArguments[] = $name;
-                }
-            } else {
-                throw new Twig_Error_Syntax(sprintf('Value for argument "%s" is required for %s "%s".', $name, $callType, $callName));
-            }
-        }
-
-        if ($isVariadic) {
-            $arbitraryArguments = new Twig_Node_Expression_Array(array(), -1);
-            foreach ($parameters as $key => $value) {
-                if (is_int($key)) {
-                    $arbitraryArguments->addElement($value);
-                } else {
-                    $arbitraryArguments->addElement($value, new Twig_Node_Expression_Constant($key, -1));
-                }
-                unset($parameters[$key]);
-            }
-
-            if ($arbitraryArguments->count()) {
-                $arguments = array_merge($arguments, $optionalArguments);
-                $arguments[] = $arbitraryArguments;
-            }
-        }
-
-        if (!empty($parameters)) {
-            $unknownParameter = null;
-            foreach ($parameters as $parameter) {
-                if ($parameter instanceof Twig_Node) {
-                    $unknownParameter = $parameter;
-                    break;
-                }
-            }
-
-            throw new Twig_Error_Syntax(sprintf(
-                'Unknown argument%s "%s" for %s "%s(%s)".',
-                count($parameters) > 1 ? 's' : '', implode('", "', array_keys($parameters)), $callType, $callName, implode(', ', $names)
-            ), $unknownParameter ? $unknownParameter->getTemplateLine() : -1);
-        }
-
-        return $arguments;
-    }
-
-    protected function normalizeName($name)
-    {
-        return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), $name));
-    }
-
-    private function getCallableParameters($callable, $isVariadic)
-    {
-        list($r) = $this->reflectCallable($callable);
-        if (null === $r) {
-            return array();
-        }
-
-        $parameters = $r->getParameters();
-        if ($this->hasNode('node')) {
-            array_shift($parameters);
-        }
-        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
-            array_shift($parameters);
-        }
-        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
-            array_shift($parameters);
-        }
-        if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) {
-            foreach ($this->getAttribute('arguments') as $argument) {
-                array_shift($parameters);
-            }
-        }
-        if ($isVariadic) {
-            $argument = end($parameters);
-            if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && array() === $argument->getDefaultValue()) {
-                array_pop($parameters);
-            } else {
-                $callableName = $r->name;
-                if ($r instanceof ReflectionMethod) {
-                    $callableName = $r->getDeclaringClass()->name.'::'.$callableName;
-                }
-
-                throw new LogicException(sprintf('The last parameter of "%s" for %s "%s" must be an array with default value, eg. "array $arg = array()".', $callableName, $this->getAttribute('type'), $this->getAttribute('name')));
-            }
-        }
-
-        return $parameters;
-    }
-
-    private function reflectCallable($callable)
-    {
-        if (null !== $this->reflector) {
-            return $this->reflector;
-        }
-
-        if (is_array($callable)) {
-            if (!method_exists($callable[0], $callable[1])) {
-                // __call()
-                return array(null, array());
-            }
-            $r = new ReflectionMethod($callable[0], $callable[1]);
-        } elseif (is_object($callable) && !$callable instanceof Closure) {
-            $r = new ReflectionObject($callable);
-            $r = $r->getMethod('__invoke');
-            $callable = array($callable, '__invoke');
-        } elseif (is_string($callable) && false !== $pos = strpos($callable, '::')) {
-            $class = substr($callable, 0, $pos);
-            $method = substr($callable, $pos + 2);
-            if (!method_exists($class, $method)) {
-                // __staticCall()
-                return array(null, array());
-            }
-            $r = new ReflectionMethod($callable);
-            $callable = array($class, $method);
-        } else {
-            $r = new ReflectionFunction($callable);
-        }
-
-        return $this->reflector = array($r, $callable);
-    }
-}
-
-class_alias('Twig_Node_Expression_Call', 'Twig\Node\Expression\CallExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Conditional.php b/inc/lib/Twig/Node/Expression/Conditional.php
deleted file mode 100644
index c339d773..00000000
--- a/inc/lib/Twig/Node/Expression/Conditional.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Conditional extends Twig_Node_Expression
-{
-    public function __construct(Twig_Node_Expression $expr1, Twig_Node_Expression $expr2, Twig_Node_Expression $expr3, $lineno)
-    {
-        parent::__construct(array('expr1' => $expr1, 'expr2' => $expr2, 'expr3' => $expr3), array(), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('((')
-            ->subcompile($this->getNode('expr1'))
-            ->raw(') ? (')
-            ->subcompile($this->getNode('expr2'))
-            ->raw(') : (')
-            ->subcompile($this->getNode('expr3'))
-            ->raw('))')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Conditional', 'Twig\Node\Expression\ConditionalExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Constant.php b/inc/lib/Twig/Node/Expression/Constant.php
deleted file mode 100644
index bf4d031c..00000000
--- a/inc/lib/Twig/Node/Expression/Constant.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Constant extends Twig_Node_Expression
-{
-    public function __construct($value, $lineno)
-    {
-        parent::__construct(array(), array('value' => $value), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->repr($this->getAttribute('value'));
-    }
-}
-
-class_alias('Twig_Node_Expression_Constant', 'Twig\Node\Expression\ConstantExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/ExtensionReference.php b/inc/lib/Twig/Node/Expression/ExtensionReference.php
deleted file mode 100644
index 114b5cd9..00000000
--- a/inc/lib/Twig/Node/Expression/ExtensionReference.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Node_Expression_ExtensionReference class is deprecated since version 1.23 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-/**
- * Represents an extension call node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.23 and will be removed in 2.0.
- */
-class Twig_Node_Expression_ExtensionReference extends Twig_Node_Expression
-{
-    public function __construct($name, $lineno, $tag = null)
-    {
-        parent::__construct(array(), array('name' => $name), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->raw(sprintf("\$this->env->getExtension('%s')", $this->getAttribute('name')));
-    }
-}
diff --git a/inc/lib/Twig/Node/Expression/Filter.php b/inc/lib/Twig/Node/Expression/Filter.php
deleted file mode 100644
index 12da1d67..00000000
--- a/inc/lib/Twig/Node/Expression/Filter.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Filter extends Twig_Node_Expression_Call
-{
-    public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
-    {
-        parent::__construct(array('node' => $node, 'filter' => $filterName, 'arguments' => $arguments), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $name = $this->getNode('filter')->getAttribute('value');
-        $filter = $compiler->getEnvironment()->getFilter($name);
-
-        $this->setAttribute('name', $name);
-        $this->setAttribute('type', 'filter');
-        $this->setAttribute('thing', $filter);
-        $this->setAttribute('needs_environment', $filter->needsEnvironment());
-        $this->setAttribute('needs_context', $filter->needsContext());
-        $this->setAttribute('arguments', $filter->getArguments());
-        if ($filter instanceof Twig_FilterCallableInterface || $filter instanceof Twig_SimpleFilter) {
-            $this->setAttribute('callable', $filter->getCallable());
-        }
-        if ($filter instanceof Twig_SimpleFilter) {
-            $this->setAttribute('is_variadic', $filter->isVariadic());
-        }
-
-        $this->compileCallable($compiler);
-    }
-}
-
-class_alias('Twig_Node_Expression_Filter', 'Twig\Node\Expression\FilterExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Filter/Default.php b/inc/lib/Twig/Node/Expression/Filter/Default.php
deleted file mode 100644
index d2e19d54..00000000
--- a/inc/lib/Twig/Node/Expression/Filter/Default.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Returns the value or the default value when it is undefined or empty.
- *
- * <pre>
- *  {{ var.foo|default('foo item on var is not defined') }}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Filter_Default extends Twig_Node_Expression_Filter
-{
-    public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
-    {
-        $default = new Twig_Node_Expression_Filter($node, new Twig_Node_Expression_Constant('default', $node->getTemplateLine()), $arguments, $node->getTemplateLine());
-
-        if ('default' === $filterName->getAttribute('value') && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
-            $test = new Twig_Node_Expression_Test_Defined(clone $node, 'defined', new Twig_Node(), $node->getTemplateLine());
-            $false = count($arguments) ? $arguments->getNode(0) : new Twig_Node_Expression_Constant('', $node->getTemplateLine());
-
-            $node = new Twig_Node_Expression_Conditional($test, $default, $false, $node->getTemplateLine());
-        } else {
-            $node = $default;
-        }
-
-        parent::__construct($node, $filterName, $arguments, $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->subcompile($this->getNode('node'));
-    }
-}
-
-class_alias('Twig_Node_Expression_Filter_Default', 'Twig\Node\Expression\Filter\DefaultFilter', false);
diff --git a/inc/lib/Twig/Node/Expression/Function.php b/inc/lib/Twig/Node/Expression/Function.php
deleted file mode 100644
index cdee7c97..00000000
--- a/inc/lib/Twig/Node/Expression/Function.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Function extends Twig_Node_Expression_Call
-{
-    public function __construct($name, Twig_NodeInterface $arguments, $lineno)
-    {
-        parent::__construct(array('arguments' => $arguments), array('name' => $name, 'is_defined_test' => false), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $name = $this->getAttribute('name');
-        $function = $compiler->getEnvironment()->getFunction($name);
-
-        $this->setAttribute('name', $name);
-        $this->setAttribute('type', 'function');
-        $this->setAttribute('thing', $function);
-        $this->setAttribute('needs_environment', $function->needsEnvironment());
-        $this->setAttribute('needs_context', $function->needsContext());
-        $this->setAttribute('arguments', $function->getArguments());
-        if ($function instanceof Twig_FunctionCallableInterface || $function instanceof Twig_SimpleFunction) {
-            $callable = $function->getCallable();
-            if ('constant' === $name && $this->getAttribute('is_defined_test')) {
-                $callable = 'twig_constant_is_defined';
-            }
-
-            $this->setAttribute('callable', $callable);
-        }
-        if ($function instanceof Twig_SimpleFunction) {
-            $this->setAttribute('is_variadic', $function->isVariadic());
-        }
-
-        $this->compileCallable($compiler);
-    }
-}
-
-class_alias('Twig_Node_Expression_Function', 'Twig\Node\Expression\FunctionExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/GetAttr.php b/inc/lib/Twig/Node/Expression/GetAttr.php
deleted file mode 100644
index b7823acc..00000000
--- a/inc/lib/Twig/Node/Expression/GetAttr.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_GetAttr extends Twig_Node_Expression
-{
-    public function __construct(Twig_Node_Expression $node, Twig_Node_Expression $attribute, Twig_Node_Expression $arguments = null, $type, $lineno)
-    {
-        $nodes = array('node' => $node, 'attribute' => $attribute);
-        if (null !== $arguments) {
-            $nodes['arguments'] = $arguments;
-        }
-
-        parent::__construct($nodes, array('type' => $type, 'is_defined_test' => false, 'ignore_strict_check' => false, 'disable_c_ext' => false), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        if ($this->getAttribute('disable_c_ext')) {
-            @trigger_error(sprintf('Using the "disable_c_ext" attribute on %s is deprecated since version 1.30 and will be removed in 2.0.', __CLASS__), E_USER_DEPRECATED);
-        }
-
-        if (function_exists('twig_template_get_attributes') && !$this->getAttribute('disable_c_ext')) {
-            $compiler->raw('twig_template_get_attributes($this, ');
-        } else {
-            $compiler->raw('$this->getAttribute(');
-        }
-
-        if ($this->getAttribute('ignore_strict_check')) {
-            $this->getNode('node')->setAttribute('ignore_strict_check', true);
-        }
-
-        $compiler->subcompile($this->getNode('node'));
-
-        $compiler->raw(', ')->subcompile($this->getNode('attribute'));
-
-        // only generate optional arguments when needed (to make generated code more readable)
-        $needFourth = $this->getAttribute('ignore_strict_check');
-        $needThird = $needFourth || $this->getAttribute('is_defined_test');
-        $needSecond = $needThird || Twig_Template::ANY_CALL !== $this->getAttribute('type');
-        $needFirst = $needSecond || $this->hasNode('arguments');
-
-        if ($needFirst) {
-            if ($this->hasNode('arguments')) {
-                $compiler->raw(', ')->subcompile($this->getNode('arguments'));
-            } else {
-                $compiler->raw(', array()');
-            }
-        }
-
-        if ($needSecond) {
-            $compiler->raw(', ')->repr($this->getAttribute('type'));
-        }
-
-        if ($needThird) {
-            $compiler->raw(', ')->repr($this->getAttribute('is_defined_test'));
-        }
-
-        if ($needFourth) {
-            $compiler->raw(', ')->repr($this->getAttribute('ignore_strict_check'));
-        }
-
-        $compiler->raw(')');
-    }
-}
-
-class_alias('Twig_Node_Expression_GetAttr', 'Twig\Node\Expression\GetAttrExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/MacroCall.php b/inc/lib/Twig/Node/Expression/MacroCall.php
deleted file mode 100644
index 3e6b8c12..00000000
--- a/inc/lib/Twig/Node/Expression/MacroCall.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) 2012 Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a macro call node.
- *
- * @author Martin Hasoň <martin.hason@gmail.com>
- */
-class Twig_Node_Expression_MacroCall extends Twig_Node_Expression
-{
-    public function __construct(Twig_Node_Expression $template, $name, Twig_Node_Expression_Array $arguments, $lineno)
-    {
-        parent::__construct(array('template' => $template, 'arguments' => $arguments), array('name' => $name), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $namedNames = array();
-        $namedCount = 0;
-        $positionalCount = 0;
-        foreach ($this->getNode('arguments')->getKeyValuePairs() as $pair) {
-            $name = $pair['key']->getAttribute('value');
-            if (!is_int($name)) {
-                $namedCount++;
-                $namedNames[$name] = 1;
-            } elseif ($namedCount > 0) {
-                throw new Twig_Error_Syntax(sprintf('Positional arguments cannot be used after named arguments for macro "%s".', $this->getAttribute('name')), $this->lineno);
-            } else {
-                $positionalCount++;
-            }
-        }
-
-        $compiler
-            ->raw('$this->callMacro(')
-            ->subcompile($this->getNode('template'))
-            ->raw(', ')->repr($this->getAttribute('name'))
-            ->raw(', ')->subcompile($this->getNode('arguments'))
-        ;
-
-        if ($namedCount > 0) {
-            $compiler
-                ->raw(', ')->repr($namedNames)
-                ->raw(', ')->repr($namedCount)
-                ->raw(', ')->repr($positionalCount)
-            ;
-        }
-
-        $compiler
-            ->raw(')')
-        ;
-    }
-}
diff --git a/inc/lib/Twig/Node/Expression/MethodCall.php b/inc/lib/Twig/Node/Expression/MethodCall.php
deleted file mode 100644
index 709016eb..00000000
--- a/inc/lib/Twig/Node/Expression/MethodCall.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_MethodCall extends Twig_Node_Expression
-{
-    public function __construct(Twig_Node_Expression $node, $method, Twig_Node_Expression_Array $arguments, $lineno)
-    {
-        parent::__construct(array('node' => $node, 'arguments' => $arguments), array('method' => $method, 'safe' => false), $lineno);
-
-        if ($node instanceof Twig_Node_Expression_Name) {
-            $node->setAttribute('always_defined', true);
-        }
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->subcompile($this->getNode('node'))
-            ->raw('->')
-            ->raw($this->getAttribute('method'))
-            ->raw('(')
-        ;
-        $first = true;
-        foreach ($this->getNode('arguments')->getKeyValuePairs() as $pair) {
-            if (!$first) {
-                $compiler->raw(', ');
-            }
-            $first = false;
-
-            $compiler->subcompile($pair['value']);
-        }
-        $compiler->raw(')');
-    }
-}
-
-class_alias('Twig_Node_Expression_MethodCall', 'Twig\Node\Expression\MethodCallExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Name.php b/inc/lib/Twig/Node/Expression/Name.php
deleted file mode 100644
index 9d5a21f8..00000000
--- a/inc/lib/Twig/Node/Expression/Name.php
+++ /dev/null
@@ -1,102 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Name extends Twig_Node_Expression
-{
-    protected $specialVars = array(
-        '_self' => '$this',
-        '_context' => '$context',
-        '_charset' => '$this->env->getCharset()',
-    );
-
-    public function __construct($name, $lineno)
-    {
-        parent::__construct(array(), array('name' => $name, 'is_defined_test' => false, 'ignore_strict_check' => false, 'always_defined' => false), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $name = $this->getAttribute('name');
-
-        $compiler->addDebugInfo($this);
-
-        if ($this->getAttribute('is_defined_test')) {
-            if ($this->isSpecial()) {
-                $compiler->repr(true);
-            } else {
-                $compiler->raw('array_key_exists(')->repr($name)->raw(', $context)');
-            }
-        } elseif ($this->isSpecial()) {
-            $compiler->raw($this->specialVars[$name]);
-        } elseif ($this->getAttribute('always_defined')) {
-            $compiler
-                ->raw('$context[')
-                ->string($name)
-                ->raw(']')
-            ;
-        } else {
-            if (PHP_VERSION_ID >= 70000) {
-                // use PHP 7 null coalescing operator
-                $compiler
-                    ->raw('($context[')
-                    ->string($name)
-                    ->raw('] ?? ')
-                ;
-
-                if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
-                    $compiler->raw('null)');
-                } else {
-                    $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
-                }
-            } elseif (PHP_VERSION_ID >= 50400) {
-                // PHP 5.4 ternary operator performance was optimized
-                $compiler
-                    ->raw('(isset($context[')
-                    ->string($name)
-                    ->raw(']) ? $context[')
-                    ->string($name)
-                    ->raw('] : ')
-                ;
-
-                if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
-                    $compiler->raw('null)');
-                } else {
-                    $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
-                }
-            } else {
-                $compiler
-                    ->raw('$this->getContext($context, ')
-                    ->string($name)
-                ;
-
-                if ($this->getAttribute('ignore_strict_check')) {
-                    $compiler->raw(', true');
-                }
-
-                $compiler
-                    ->raw(')')
-                ;
-            }
-        }
-    }
-
-    public function isSpecial()
-    {
-        return isset($this->specialVars[$this->getAttribute('name')]);
-    }
-
-    public function isSimple()
-    {
-        return !$this->isSpecial() && !$this->getAttribute('is_defined_test');
-    }
-}
-
-class_alias('Twig_Node_Expression_Name', 'Twig\Node\Expression\NameExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/NullCoalesce.php b/inc/lib/Twig/Node/Expression/NullCoalesce.php
deleted file mode 100644
index eaafa4c9..00000000
--- a/inc/lib/Twig/Node/Expression/NullCoalesce.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_NullCoalesce extends Twig_Node_Expression_Conditional
-{
-    public function __construct(Twig_NodeInterface $left, Twig_NodeInterface $right, $lineno)
-    {
-        $test = new Twig_Node_Expression_Binary_And(
-            new Twig_Node_Expression_Test_Defined(clone $left, 'defined', new Twig_Node(), $left->getTemplateLine()),
-            new Twig_Node_Expression_Unary_Not(new Twig_Node_Expression_Test_Null($left, 'null', new Twig_Node(), $left->getTemplateLine()), $left->getTemplateLine()),
-            $left->getTemplateLine()
-        );
-
-        parent::__construct($test, $left, $right, $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        /*
-         * This optimizes only one case. PHP 7 also supports more complex expressions
-         * that can return null. So, for instance, if log is defined, log("foo") ?? "..." works,
-         * but log($a["foo"]) ?? "..." does not if $a["foo"] is not defined. More advanced
-         * cases might be implemented as an optimizer node visitor, but has not been done
-         * as benefits are probably not worth the added complexity.
-         */
-        if (PHP_VERSION_ID >= 70000 && $this->getNode('expr2') instanceof Twig_Node_Expression_Name) {
-            $this->getNode('expr2')->setAttribute('always_defined', true);
-            $compiler
-                ->raw('((')
-                ->subcompile($this->getNode('expr2'))
-                ->raw(') ?? (')
-                ->subcompile($this->getNode('expr3'))
-                ->raw('))')
-            ;
-        } else {
-            parent::compile($compiler);
-        }
-    }
-}
-
-class_alias('Twig_Node_Expression_NullCoalesce', 'Twig\Node\Expression\NullCoalesceExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Parent.php b/inc/lib/Twig/Node/Expression/Parent.php
deleted file mode 100644
index 78692db2..00000000
--- a/inc/lib/Twig/Node/Expression/Parent.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a parent node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Parent extends Twig_Node_Expression
-{
-    public function __construct($name, $lineno, $tag = null)
-    {
-        parent::__construct(array(), array('output' => false, 'name' => $name), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        if ($this->getAttribute('output')) {
-            $compiler
-                ->addDebugInfo($this)
-                ->write('$this->displayParentBlock(')
-                ->string($this->getAttribute('name'))
-                ->raw(", \$context, \$blocks);\n")
-            ;
-        } else {
-            $compiler
-                ->raw('$this->renderParentBlock(')
-                ->string($this->getAttribute('name'))
-                ->raw(', $context, $blocks)')
-            ;
-        }
-    }
-}
-
-class_alias('Twig_Node_Expression_Parent', 'Twig\Node\Expression\ParentExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/TempName.php b/inc/lib/Twig/Node/Expression/TempName.php
deleted file mode 100644
index 0a86e003..00000000
--- a/inc/lib/Twig/Node/Expression/TempName.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_TempName extends Twig_Node_Expression
-{
-    public function __construct($name, $lineno)
-    {
-        parent::__construct(array(), array('name' => $name), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('$_')
-            ->raw($this->getAttribute('name'))
-            ->raw('_')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_TempName', 'Twig\Node\Expression\TempNameExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Test.php b/inc/lib/Twig/Node/Expression/Test.php
deleted file mode 100644
index ad102ba6..00000000
--- a/inc/lib/Twig/Node/Expression/Test.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Test extends Twig_Node_Expression_Call
-{
-    public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno)
-    {
-        $nodes = array('node' => $node);
-        if (null !== $arguments) {
-            $nodes['arguments'] = $arguments;
-        }
-
-        parent::__construct($nodes, array('name' => $name), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $name = $this->getAttribute('name');
-        $test = $compiler->getEnvironment()->getTest($name);
-
-        $this->setAttribute('name', $name);
-        $this->setAttribute('type', 'test');
-        $this->setAttribute('thing', $test);
-        if ($test instanceof Twig_TestCallableInterface || $test instanceof Twig_SimpleTest) {
-            $this->setAttribute('callable', $test->getCallable());
-        }
-        if ($test instanceof Twig_SimpleTest) {
-            $this->setAttribute('is_variadic', $test->isVariadic());
-        }
-
-        $this->compileCallable($compiler);
-    }
-}
-
-class_alias('Twig_Node_Expression_Test', 'Twig\Node\Expression\TestExpression', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Constant.php b/inc/lib/Twig/Node/Expression/Test/Constant.php
deleted file mode 100644
index a51a4ba1..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Constant.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a variable is the exact same value as a constant.
- *
- * <pre>
- *  {% if post.status is constant('Post::PUBLISHED') %}
- *    the status attribute is exactly the same as Post::PUBLISHED
- *  {% endif %}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Constant extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('node'))
-            ->raw(' === constant(')
-        ;
-
-        if ($this->getNode('arguments')->hasNode(1)) {
-            $compiler
-                ->raw('get_class(')
-                ->subcompile($this->getNode('arguments')->getNode(1))
-                ->raw(')."::".')
-            ;
-        }
-
-        $compiler
-            ->subcompile($this->getNode('arguments')->getNode(0))
-            ->raw('))')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Constant', 'Twig\Node\Expression\Test\ConstantTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Defined.php b/inc/lib/Twig/Node/Expression/Test/Defined.php
deleted file mode 100644
index 2136c390..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Defined.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a variable is defined in the current context.
- *
- * <pre>
- * {# defined works with variable names and variable attributes #}
- * {% if foo is defined %}
- *     {# ... #}
- * {% endif %}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Defined extends Twig_Node_Expression_Test
-{
-    public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno)
-    {
-        if ($node instanceof Twig_Node_Expression_Name) {
-            $node->setAttribute('is_defined_test', true);
-        } elseif ($node instanceof Twig_Node_Expression_GetAttr) {
-            $node->setAttribute('is_defined_test', true);
-            $this->changeIgnoreStrictCheck($node);
-        } elseif ($node instanceof Twig_Node_Expression_BlockReference) {
-            $node->setAttribute('is_defined_test', true);
-        } elseif ($node instanceof Twig_Node_Expression_Function && 'constant' === $node->getAttribute('name')) {
-            $node->setAttribute('is_defined_test', true);
-        } elseif ($node instanceof Twig_Node_Expression_Constant || $node instanceof Twig_Node_Expression_Array) {
-            $node = new Twig_Node_Expression_Constant(true, $node->getTemplateLine());
-        } else {
-            throw new Twig_Error_Syntax('The "defined" test only works with simple variables.', $this->getTemplateLine());
-        }
-
-        parent::__construct($node, $name, $arguments, $lineno);
-    }
-
-    protected function changeIgnoreStrictCheck(Twig_Node_Expression_GetAttr $node)
-    {
-        $node->setAttribute('ignore_strict_check', true);
-
-        if ($node->getNode('node') instanceof Twig_Node_Expression_GetAttr) {
-            $this->changeIgnoreStrictCheck($node->getNode('node'));
-        }
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->subcompile($this->getNode('node'));
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Defined', 'Twig\Node\Expression\Test\DefinedTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Divisibleby.php b/inc/lib/Twig/Node/Expression/Test/Divisibleby.php
deleted file mode 100644
index a5d71961..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Divisibleby.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a variable is divisible by a number.
- *
- * <pre>
- *  {% if loop.index is divisible by(3) %}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Divisibleby extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(0 == ')
-            ->subcompile($this->getNode('node'))
-            ->raw(' % ')
-            ->subcompile($this->getNode('arguments')->getNode(0))
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Divisibleby', 'Twig\Node\Expression\Test\DivisiblebyTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Even.php b/inc/lib/Twig/Node/Expression/Test/Even.php
deleted file mode 100644
index 7e198bea..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Even.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a number is even.
- *
- * <pre>
- *  {{ var is even }}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Even extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('node'))
-            ->raw(' % 2 == 0')
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Even', 'Twig\Node\Expression\Test\EvenTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Null.php b/inc/lib/Twig/Node/Expression/Test/Null.php
deleted file mode 100644
index 3746e4cb..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Null.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks that a variable is null.
- *
- * <pre>
- *  {{ var is none }}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Null extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(null === ')
-            ->subcompile($this->getNode('node'))
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Null', 'Twig\Node\Expression\Test\NullTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Odd.php b/inc/lib/Twig/Node/Expression/Test/Odd.php
deleted file mode 100644
index 0c6c099b..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Odd.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a number is odd.
- *
- * <pre>
- *  {{ var is odd }}
- * </pre>
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Odd extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('node'))
-            ->raw(' % 2 == 1')
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Odd', 'Twig\Node\Expression\Test\OddTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Test/Sameas.php b/inc/lib/Twig/Node/Expression/Test/Sameas.php
deleted file mode 100644
index e95ff1f2..00000000
--- a/inc/lib/Twig/Node/Expression/Test/Sameas.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Checks if a variable is the same as another one (=== in PHP).
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Expression_Test_Sameas extends Twig_Node_Expression_Test
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->raw('(')
-            ->subcompile($this->getNode('node'))
-            ->raw(' === ')
-            ->subcompile($this->getNode('arguments')->getNode(0))
-            ->raw(')')
-        ;
-    }
-}
-
-class_alias('Twig_Node_Expression_Test_Sameas', 'Twig\Node\Expression\Test\SameasTest', false);
diff --git a/inc/lib/Twig/Node/Expression/Unary.php b/inc/lib/Twig/Node/Expression/Unary.php
deleted file mode 100644
index 5804485e..00000000
--- a/inc/lib/Twig/Node/Expression/Unary.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-abstract class Twig_Node_Expression_Unary extends Twig_Node_Expression
-{
-    public function __construct(Twig_NodeInterface $node, $lineno)
-    {
-        parent::__construct(array('node' => $node), array(), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->raw(' ');
-        $this->operator($compiler);
-        $compiler->subcompile($this->getNode('node'));
-    }
-
-    abstract public function operator(Twig_Compiler $compiler);
-}
-
-class_alias('Twig_Node_Expression_Unary', 'Twig\Node\Expression\Unary\AbstractUnary', false);
diff --git a/inc/lib/Twig/Node/Expression/Unary/Neg.php b/inc/lib/Twig/Node/Expression/Unary/Neg.php
deleted file mode 100644
index 039d933d..00000000
--- a/inc/lib/Twig/Node/Expression/Unary/Neg.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Unary_Neg extends Twig_Node_Expression_Unary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        $compiler->raw('-');
-    }
-}
-
-class_alias('Twig_Node_Expression_Unary_Neg', 'Twig\Node\Expression\Unary\NegUnary', false);
diff --git a/inc/lib/Twig/Node/Expression/Unary/Not.php b/inc/lib/Twig/Node/Expression/Unary/Not.php
deleted file mode 100644
index a0860b18..00000000
--- a/inc/lib/Twig/Node/Expression/Unary/Not.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Unary_Not extends Twig_Node_Expression_Unary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        $compiler->raw('!');
-    }
-}
-
-class_alias('Twig_Node_Expression_Unary_Not', 'Twig\Node\Expression\Unary\NotUnary', false);
diff --git a/inc/lib/Twig/Node/Expression/Unary/Pos.php b/inc/lib/Twig/Node/Expression/Unary/Pos.php
deleted file mode 100644
index eeff5452..00000000
--- a/inc/lib/Twig/Node/Expression/Unary/Pos.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-class Twig_Node_Expression_Unary_Pos extends Twig_Node_Expression_Unary
-{
-    public function operator(Twig_Compiler $compiler)
-    {
-        $compiler->raw('+');
-    }
-}
-
-class_alias('Twig_Node_Expression_Unary_Pos', 'Twig\Node\Expression\Unary\PosUnary', false);
diff --git a/inc/lib/Twig/Node/Flush.php b/inc/lib/Twig/Node/Flush.php
deleted file mode 100644
index fcc461ac..00000000
--- a/inc/lib/Twig/Node/Flush.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a flush node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Flush extends Twig_Node
-{
-    public function __construct($lineno, $tag)
-    {
-        parent::__construct(array(), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write("flush();\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Flush', 'Twig\Node\FlushNode', false);
diff --git a/inc/lib/Twig/Node/For.php b/inc/lib/Twig/Node/For.php
deleted file mode 100644
index 914b70c9..00000000
--- a/inc/lib/Twig/Node/For.php
+++ /dev/null
@@ -1,113 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a for node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_For extends Twig_Node
-{
-    protected $loop;
-
-    public function __construct(Twig_Node_Expression_AssignName $keyTarget, Twig_Node_Expression_AssignName $valueTarget, Twig_Node_Expression $seq, Twig_Node_Expression $ifexpr = null, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
-    {
-        $body = new Twig_Node(array($body, $this->loop = new Twig_Node_ForLoop($lineno, $tag)));
-
-        if (null !== $ifexpr) {
-            $body = new Twig_Node_If(new Twig_Node(array($ifexpr, $body)), null, $lineno, $tag);
-        }
-
-        $nodes = array('key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'body' => $body);
-        if (null !== $else) {
-            $nodes['else'] = $else;
-        }
-
-        parent::__construct($nodes, array('with_loop' => true, 'ifexpr' => null !== $ifexpr), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write("\$context['_parent'] = \$context;\n")
-            ->write("\$context['_seq'] = twig_ensure_traversable(")
-            ->subcompile($this->getNode('seq'))
-            ->raw(");\n")
-        ;
-
-        if ($this->hasNode('else')) {
-            $compiler->write("\$context['_iterated'] = false;\n");
-        }
-
-        if ($this->getAttribute('with_loop')) {
-            $compiler
-                ->write("\$context['loop'] = array(\n")
-                ->write("  'parent' => \$context['_parent'],\n")
-                ->write("  'index0' => 0,\n")
-                ->write("  'index'  => 1,\n")
-                ->write("  'first'  => true,\n")
-                ->write(");\n")
-            ;
-
-            if (!$this->getAttribute('ifexpr')) {
-                $compiler
-                    ->write("if (is_array(\$context['_seq']) || (is_object(\$context['_seq']) && \$context['_seq'] instanceof Countable)) {\n")
-                    ->indent()
-                    ->write("\$length = count(\$context['_seq']);\n")
-                    ->write("\$context['loop']['revindex0'] = \$length - 1;\n")
-                    ->write("\$context['loop']['revindex'] = \$length;\n")
-                    ->write("\$context['loop']['length'] = \$length;\n")
-                    ->write("\$context['loop']['last'] = 1 === \$length;\n")
-                    ->outdent()
-                    ->write("}\n")
-                ;
-            }
-        }
-
-        $this->loop->setAttribute('else', $this->hasNode('else'));
-        $this->loop->setAttribute('with_loop', $this->getAttribute('with_loop'));
-        $this->loop->setAttribute('ifexpr', $this->getAttribute('ifexpr'));
-
-        $compiler
-            ->write("foreach (\$context['_seq'] as ")
-            ->subcompile($this->getNode('key_target'))
-            ->raw(' => ')
-            ->subcompile($this->getNode('value_target'))
-            ->raw(") {\n")
-            ->indent()
-            ->subcompile($this->getNode('body'))
-            ->outdent()
-            ->write("}\n")
-        ;
-
-        if ($this->hasNode('else')) {
-            $compiler
-                ->write("if (!\$context['_iterated']) {\n")
-                ->indent()
-                ->subcompile($this->getNode('else'))
-                ->outdent()
-                ->write("}\n")
-            ;
-        }
-
-        $compiler->write("\$_parent = \$context['_parent'];\n");
-
-        // remove some "private" loop variables (needed for nested loops)
-        $compiler->write('unset($context[\'_seq\'], $context[\'_iterated\'], $context[\''.$this->getNode('key_target')->getAttribute('name').'\'], $context[\''.$this->getNode('value_target')->getAttribute('name').'\'], $context[\'_parent\'], $context[\'loop\']);'."\n");
-
-        // keep the values set in the inner context for variables defined in the outer context
-        $compiler->write("\$context = array_intersect_key(\$context, \$_parent) + \$_parent;\n");
-    }
-}
-
-class_alias('Twig_Node_For', 'Twig\Node\ForNode', false);
diff --git a/inc/lib/Twig/Node/ForLoop.php b/inc/lib/Twig/Node/ForLoop.php
deleted file mode 100644
index 06477cf1..00000000
--- a/inc/lib/Twig/Node/ForLoop.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Internal node used by the for node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_ForLoop extends Twig_Node
-{
-    public function __construct($lineno, $tag = null)
-    {
-        parent::__construct(array(), array('with_loop' => false, 'ifexpr' => false, 'else' => false), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        if ($this->getAttribute('else')) {
-            $compiler->write("\$context['_iterated'] = true;\n");
-        }
-
-        if ($this->getAttribute('with_loop')) {
-            $compiler
-                ->write("++\$context['loop']['index0'];\n")
-                ->write("++\$context['loop']['index'];\n")
-                ->write("\$context['loop']['first'] = false;\n")
-            ;
-
-            if (!$this->getAttribute('ifexpr')) {
-                $compiler
-                    ->write("if (isset(\$context['loop']['length'])) {\n")
-                    ->indent()
-                    ->write("--\$context['loop']['revindex0'];\n")
-                    ->write("--\$context['loop']['revindex'];\n")
-                    ->write("\$context['loop']['last'] = 0 === \$context['loop']['revindex0'];\n")
-                    ->outdent()
-                    ->write("}\n")
-                ;
-            }
-        }
-    }
-}
-
-class_alias('Twig_Node_ForLoop', 'Twig\Node\ForLoopNode', false);
diff --git a/inc/lib/Twig/Node/If.php b/inc/lib/Twig/Node/If.php
deleted file mode 100644
index d82edec7..00000000
--- a/inc/lib/Twig/Node/If.php
+++ /dev/null
@@ -1,68 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents an if node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_If extends Twig_Node
-{
-    public function __construct(Twig_NodeInterface $tests, Twig_NodeInterface $else = null, $lineno, $tag = null)
-    {
-        $nodes = array('tests' => $tests);
-        if (null !== $else) {
-            $nodes['else'] = $else;
-        }
-
-        parent::__construct($nodes, array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->addDebugInfo($this);
-        for ($i = 0, $count = count($this->getNode('tests')); $i < $count; $i += 2) {
-            if ($i > 0) {
-                $compiler
-                    ->outdent()
-                    ->write('} elseif (')
-                ;
-            } else {
-                $compiler
-                    ->write('if (')
-                ;
-            }
-
-            $compiler
-                ->subcompile($this->getNode('tests')->getNode($i))
-                ->raw(") {\n")
-                ->indent()
-                ->subcompile($this->getNode('tests')->getNode($i + 1))
-            ;
-        }
-
-        if ($this->hasNode('else')) {
-            $compiler
-                ->outdent()
-                ->write("} else {\n")
-                ->indent()
-                ->subcompile($this->getNode('else'))
-            ;
-        }
-
-        $compiler
-            ->outdent()
-            ->write("}\n");
-    }
-}
-
-class_alias('Twig_Node_If', 'Twig\Node\IfNode', false);
diff --git a/inc/lib/Twig/Node/Import.php b/inc/lib/Twig/Node/Import.php
deleted file mode 100644
index c77e320b..00000000
--- a/inc/lib/Twig/Node/Import.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents an import node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Import extends Twig_Node
-{
-    public function __construct(Twig_Node_Expression $expr, Twig_Node_Expression $var, $lineno, $tag = null)
-    {
-        parent::__construct(array('expr' => $expr, 'var' => $var), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write('')
-            ->subcompile($this->getNode('var'))
-            ->raw(' = ')
-        ;
-
-        if ($this->getNode('expr') instanceof Twig_Node_Expression_Name && '_self' === $this->getNode('expr')->getAttribute('name')) {
-            $compiler->raw('$this');
-        } else {
-            $compiler
-                ->raw('$this->loadTemplate(')
-                ->subcompile($this->getNode('expr'))
-                ->raw(', ')
-                ->repr($this->getTemplateName())
-                ->raw(', ')
-                ->repr($this->getTemplateLine())
-                ->raw(')')
-            ;
-        }
-
-        $compiler->raw(";\n");
-    }
-}
-
-class_alias('Twig_Node_Import', 'Twig\Node\ImportNode', false);
diff --git a/inc/lib/Twig/Node/Include.php b/inc/lib/Twig/Node/Include.php
deleted file mode 100644
index 2a5114cb..00000000
--- a/inc/lib/Twig/Node/Include.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents an include node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Include extends Twig_Node implements Twig_NodeOutputInterface
-{
-    public function __construct(Twig_Node_Expression $expr, Twig_Node_Expression $variables = null, $only = false, $ignoreMissing = false, $lineno, $tag = null)
-    {
-        $nodes = array('expr' => $expr);
-        if (null !== $variables) {
-            $nodes['variables'] = $variables;
-        }
-
-        parent::__construct($nodes, array('only' => (bool) $only, 'ignore_missing' => (bool) $ignoreMissing), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->addDebugInfo($this);
-
-        if ($this->getAttribute('ignore_missing')) {
-            $compiler
-                ->write("try {\n")
-                ->indent()
-            ;
-        }
-
-        $this->addGetTemplate($compiler);
-
-        $compiler->raw('->display(');
-
-        $this->addTemplateArguments($compiler);
-
-        $compiler->raw(");\n");
-
-        if ($this->getAttribute('ignore_missing')) {
-            $compiler
-                ->outdent()
-                ->write("} catch (Twig_Error_Loader \$e) {\n")
-                ->indent()
-                ->write("// ignore missing template\n")
-                ->outdent()
-                ->write("}\n\n")
-            ;
-        }
-    }
-
-    protected function addGetTemplate(Twig_Compiler $compiler)
-    {
-        $compiler
-             ->write('$this->loadTemplate(')
-             ->subcompile($this->getNode('expr'))
-             ->raw(', ')
-             ->repr($this->getTemplateName())
-             ->raw(', ')
-             ->repr($this->getTemplateLine())
-             ->raw(')')
-         ;
-    }
-
-    protected function addTemplateArguments(Twig_Compiler $compiler)
-    {
-        if (!$this->hasNode('variables')) {
-            $compiler->raw(false === $this->getAttribute('only') ? '$context' : 'array()');
-        } elseif (false === $this->getAttribute('only')) {
-            $compiler
-                ->raw('array_merge($context, ')
-                ->subcompile($this->getNode('variables'))
-                ->raw(')')
-            ;
-        } else {
-            $compiler->subcompile($this->getNode('variables'));
-        }
-    }
-}
-
-class_alias('Twig_Node_Include', 'Twig\Node\IncludeNode', false);
diff --git a/inc/lib/Twig/Node/Macro.php b/inc/lib/Twig/Node/Macro.php
deleted file mode 100644
index 3cf54977..00000000
--- a/inc/lib/Twig/Node/Macro.php
+++ /dev/null
@@ -1,125 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a macro node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Macro extends Twig_Node
-{
-    const VARARGS_NAME = 'varargs';
-
-    public function __construct($name, Twig_NodeInterface $body, Twig_NodeInterface $arguments, $lineno, $tag = null)
-    {
-        foreach ($arguments as $argumentName => $argument) {
-            if (self::VARARGS_NAME === $argumentName) {
-                throw new Twig_Error_Syntax(sprintf('The argument "%s" in macro "%s" cannot be defined because the variable "%s" is reserved for arbitrary arguments.', self::VARARGS_NAME, $name, self::VARARGS_NAME), $argument->getTemplateLine());
-            }
-        }
-
-        parent::__construct(array('body' => $body, 'arguments' => $arguments), array('name' => $name), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write(sprintf('public function get%s(', $this->getAttribute('name')))
-        ;
-
-        $count = count($this->getNode('arguments'));
-        $pos = 0;
-        foreach ($this->getNode('arguments') as $name => $default) {
-            $compiler
-                ->raw('$__'.$name.'__ = ')
-                ->subcompile($default)
-            ;
-
-            if (++$pos < $count) {
-                $compiler->raw(', ');
-            }
-        }
-
-        if (PHP_VERSION_ID >= 50600) {
-            if ($count) {
-                $compiler->raw(', ');
-            }
-
-            $compiler->raw('...$__varargs__');
-        }
-
-        $compiler
-            ->raw(")\n")
-            ->write("{\n")
-            ->indent()
-        ;
-
-        $compiler
-            ->write("\$context = \$this->env->mergeGlobals(array(\n")
-            ->indent()
-        ;
-
-        foreach ($this->getNode('arguments') as $name => $default) {
-            $compiler
-                ->write('')
-                ->string($name)
-                ->raw(' => $__'.$name.'__')
-                ->raw(",\n")
-            ;
-        }
-
-        $compiler
-            ->write('')
-            ->string(self::VARARGS_NAME)
-            ->raw(' => ')
-        ;
-
-        if (PHP_VERSION_ID >= 50600) {
-            $compiler->raw("\$__varargs__,\n");
-        } else {
-            $compiler
-                ->raw('func_num_args() > ')
-                ->repr($count)
-                ->raw(' ? array_slice(func_get_args(), ')
-                ->repr($count)
-                ->raw(") : array(),\n")
-            ;
-        }
-
-        $compiler
-            ->outdent()
-            ->write("));\n\n")
-            ->write("\$blocks = array();\n\n")
-            ->write("ob_start();\n")
-            ->write("try {\n")
-            ->indent()
-            ->subcompile($this->getNode('body'))
-            ->outdent()
-            ->write("} catch (Exception \$e) {\n")
-            ->indent()
-            ->write("ob_end_clean();\n\n")
-            ->write("throw \$e;\n")
-            ->outdent()
-            ->write("} catch (Throwable \$e) {\n")
-            ->indent()
-            ->write("ob_end_clean();\n\n")
-            ->write("throw \$e;\n")
-            ->outdent()
-            ->write("}\n\n")
-            ->write("return ('' === \$tmp = ob_get_clean()) ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset());\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Macro', 'Twig\Node\MacroNode', false);
diff --git a/inc/lib/Twig/Node/Module.php b/inc/lib/Twig/Node/Module.php
deleted file mode 100644
index 5cd8d050..00000000
--- a/inc/lib/Twig/Node/Module.php
+++ /dev/null
@@ -1,461 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a module node.
- *
- * Consider this class as being final. If you need to customize the behavior of
- * the generated class, consider adding nodes to the following nodes: display_start,
- * display_end, constructor_start, constructor_end, and class_end.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Module extends Twig_Node
-{
-    private $source;
-
-    public function __construct(Twig_NodeInterface $body, Twig_Node_Expression $parent = null, Twig_NodeInterface $blocks, Twig_NodeInterface $macros, Twig_NodeInterface $traits, $embeddedTemplates, $name, $source = '')
-    {
-        if (!$name instanceof Twig_Source) {
-            @trigger_error(sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
-            $this->source = new Twig_Source($source, $name);
-        } else {
-            $this->source = $name;
-        }
-
-        $nodes = array(
-            'body' => $body,
-            'blocks' => $blocks,
-            'macros' => $macros,
-            'traits' => $traits,
-            'display_start' => new Twig_Node(),
-            'display_end' => new Twig_Node(),
-            'constructor_start' => new Twig_Node(),
-            'constructor_end' => new Twig_Node(),
-            'class_end' => new Twig_Node(),
-        );
-        if (null !== $parent) {
-            $nodes['parent'] = $parent;
-        }
-
-        // embedded templates are set as attributes so that they are only visited once by the visitors
-        parent::__construct($nodes, array(
-            // source to be remove in 2.0
-            'source' => $this->source->getCode(),
-            // filename to be remove in 2.0 (use getTemplateName() instead)
-            'filename' => $this->source->getName(),
-            'index' => null,
-            'embedded_templates' => $embeddedTemplates,
-        ), 1);
-
-        // populate the template name of all node children
-        $this->setTemplateName($this->source->getName());
-    }
-
-    public function setIndex($index)
-    {
-        $this->setAttribute('index', $index);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $this->compileTemplate($compiler);
-
-        foreach ($this->getAttribute('embedded_templates') as $template) {
-            $compiler->subcompile($template);
-        }
-    }
-
-    protected function compileTemplate(Twig_Compiler $compiler)
-    {
-        if (!$this->getAttribute('index')) {
-            $compiler->write('<?php');
-        }
-
-        $this->compileClassHeader($compiler);
-
-        if (
-            count($this->getNode('blocks'))
-            || count($this->getNode('traits'))
-            || !$this->hasNode('parent')
-            || $this->getNode('parent') instanceof Twig_Node_Expression_Constant
-            || count($this->getNode('constructor_start'))
-            || count($this->getNode('constructor_end'))
-        ) {
-            $this->compileConstructor($compiler);
-        }
-
-        $this->compileGetParent($compiler);
-
-        $this->compileDisplay($compiler);
-
-        $compiler->subcompile($this->getNode('blocks'));
-
-        $this->compileMacros($compiler);
-
-        $this->compileGetTemplateName($compiler);
-
-        $this->compileIsTraitable($compiler);
-
-        $this->compileDebugInfo($compiler);
-
-        $this->compileGetSource($compiler);
-
-        $this->compileGetSourceContext($compiler);
-
-        $this->compileClassFooter($compiler);
-    }
-
-    protected function compileGetParent(Twig_Compiler $compiler)
-    {
-        if (!$this->hasNode('parent')) {
-            return;
-        }
-        $parent = $this->getNode('parent');
-
-        $compiler
-            ->write("protected function doGetParent(array \$context)\n", "{\n")
-            ->indent()
-            ->addDebugInfo($parent)
-            ->write('return ')
-        ;
-
-        if ($parent instanceof Twig_Node_Expression_Constant) {
-            $compiler->subcompile($parent);
-        } else {
-            $compiler
-                ->raw('$this->loadTemplate(')
-                ->subcompile($parent)
-                ->raw(', ')
-                ->repr($this->source->getName())
-                ->raw(', ')
-                ->repr($parent->getTemplateLine())
-                ->raw(')')
-            ;
-        }
-
-        $compiler
-            ->raw(";\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileClassHeader(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("\n\n")
-            // if the template name contains */, add a blank to avoid a PHP parse error
-            ->write('/* '.str_replace('*/', '* /', $this->source->getName())." */\n")
-            ->write('class '.$compiler->getEnvironment()->getTemplateClass($this->source->getName(), $this->getAttribute('index')))
-            ->raw(sprintf(" extends %s\n", $compiler->getEnvironment()->getBaseTemplateClass()))
-            ->write("{\n")
-            ->indent()
-        ;
-    }
-
-    protected function compileConstructor(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("public function __construct(Twig_Environment \$env)\n", "{\n")
-            ->indent()
-            ->subcompile($this->getNode('constructor_start'))
-            ->write("parent::__construct(\$env);\n\n")
-        ;
-
-        // parent
-        if (!$this->hasNode('parent')) {
-            $compiler->write("\$this->parent = false;\n\n");
-        } elseif (($parent = $this->getNode('parent')) && $parent instanceof Twig_Node_Expression_Constant) {
-            $compiler
-                ->addDebugInfo($parent)
-                ->write('$this->parent = $this->loadTemplate(')
-                ->subcompile($parent)
-                ->raw(', ')
-                ->repr($this->source->getName())
-                ->raw(', ')
-                ->repr($parent->getTemplateLine())
-                ->raw(");\n")
-            ;
-        }
-
-        $countTraits = count($this->getNode('traits'));
-        if ($countTraits) {
-            // traits
-            foreach ($this->getNode('traits') as $i => $trait) {
-                $this->compileLoadTemplate($compiler, $trait->getNode('template'), sprintf('$_trait_%s', $i));
-
-                $compiler
-                    ->addDebugInfo($trait->getNode('template'))
-                    ->write(sprintf("if (!\$_trait_%s->isTraitable()) {\n", $i))
-                    ->indent()
-                    ->write("throw new Twig_Error_Runtime('Template \"'.")
-                    ->subcompile($trait->getNode('template'))
-                    ->raw(".'\" cannot be used as a trait.');\n")
-                    ->outdent()
-                    ->write("}\n")
-                    ->write(sprintf("\$_trait_%s_blocks = \$_trait_%s->getBlocks();\n\n", $i, $i))
-                ;
-
-                foreach ($trait->getNode('targets') as $key => $value) {
-                    $compiler
-                        ->write(sprintf('if (!isset($_trait_%s_blocks[', $i))
-                        ->string($key)
-                        ->raw("])) {\n")
-                        ->indent()
-                        ->write("throw new Twig_Error_Runtime(sprintf('Block ")
-                        ->string($key)
-                        ->raw(' is not defined in trait ')
-                        ->subcompile($trait->getNode('template'))
-                        ->raw(".'));\n")
-                        ->outdent()
-                        ->write("}\n\n")
-
-                        ->write(sprintf('$_trait_%s_blocks[', $i))
-                        ->subcompile($value)
-                        ->raw(sprintf('] = $_trait_%s_blocks[', $i))
-                        ->string($key)
-                        ->raw(sprintf(']; unset($_trait_%s_blocks[', $i))
-                        ->string($key)
-                        ->raw("]);\n\n")
-                    ;
-                }
-            }
-
-            if ($countTraits > 1) {
-                $compiler
-                    ->write("\$this->traits = array_merge(\n")
-                    ->indent()
-                ;
-
-                for ($i = 0; $i < $countTraits; ++$i) {
-                    $compiler
-                        ->write(sprintf('$_trait_%s_blocks'.($i == $countTraits - 1 ? '' : ',')."\n", $i))
-                    ;
-                }
-
-                $compiler
-                    ->outdent()
-                    ->write(");\n\n")
-                ;
-            } else {
-                $compiler
-                    ->write("\$this->traits = \$_trait_0_blocks;\n\n")
-                ;
-            }
-
-            $compiler
-                ->write("\$this->blocks = array_merge(\n")
-                ->indent()
-                ->write("\$this->traits,\n")
-                ->write("array(\n")
-            ;
-        } else {
-            $compiler
-                ->write("\$this->blocks = array(\n")
-            ;
-        }
-
-        // blocks
-        $compiler
-            ->indent()
-        ;
-
-        foreach ($this->getNode('blocks') as $name => $node) {
-            $compiler
-                ->write(sprintf("'%s' => array(\$this, 'block_%s'),\n", $name, $name))
-            ;
-        }
-
-        if ($countTraits) {
-            $compiler
-                ->outdent()
-                ->write(")\n")
-            ;
-        }
-
-        $compiler
-            ->outdent()
-            ->write(");\n")
-            ->outdent()
-            ->subcompile($this->getNode('constructor_end'))
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileDisplay(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("protected function doDisplay(array \$context, array \$blocks = array())\n", "{\n")
-            ->indent()
-            ->subcompile($this->getNode('display_start'))
-            ->subcompile($this->getNode('body'))
-        ;
-
-        if ($this->hasNode('parent')) {
-            $parent = $this->getNode('parent');
-            $compiler->addDebugInfo($parent);
-            if ($parent instanceof Twig_Node_Expression_Constant) {
-                $compiler->write('$this->parent');
-            } else {
-                $compiler->write('$this->getParent($context)');
-            }
-            $compiler->raw("->display(\$context, array_merge(\$this->blocks, \$blocks));\n");
-        }
-
-        $compiler
-            ->subcompile($this->getNode('display_end'))
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileClassFooter(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->subcompile($this->getNode('class_end'))
-            ->outdent()
-            ->write("}\n")
-        ;
-    }
-
-    protected function compileMacros(Twig_Compiler $compiler)
-    {
-        $compiler->subcompile($this->getNode('macros'));
-    }
-
-    protected function compileGetTemplateName(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("public function getTemplateName()\n", "{\n")
-            ->indent()
-            ->write('return ')
-            ->repr($this->source->getName())
-            ->raw(";\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileIsTraitable(Twig_Compiler $compiler)
-    {
-        // A template can be used as a trait if:
-        //   * it has no parent
-        //   * it has no macros
-        //   * it has no body
-        //
-        // Put another way, a template can be used as a trait if it
-        // only contains blocks and use statements.
-        $traitable = !$this->hasNode('parent') && 0 === count($this->getNode('macros'));
-        if ($traitable) {
-            if ($this->getNode('body') instanceof Twig_Node_Body) {
-                $nodes = $this->getNode('body')->getNode(0);
-            } else {
-                $nodes = $this->getNode('body');
-            }
-
-            if (!count($nodes)) {
-                $nodes = new Twig_Node(array($nodes));
-            }
-
-            foreach ($nodes as $node) {
-                if (!count($node)) {
-                    continue;
-                }
-
-                if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
-                    continue;
-                }
-
-                if ($node instanceof Twig_Node_BlockReference) {
-                    continue;
-                }
-
-                $traitable = false;
-                break;
-            }
-        }
-
-        if ($traitable) {
-            return;
-        }
-
-        $compiler
-            ->write("public function isTraitable()\n", "{\n")
-            ->indent()
-            ->write(sprintf("return %s;\n", $traitable ? 'true' : 'false'))
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileDebugInfo(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("public function getDebugInfo()\n", "{\n")
-            ->indent()
-            ->write(sprintf("return %s;\n", str_replace("\n", '', var_export(array_reverse($compiler->getDebugInfo(), true), true))))
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileGetSource(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("/** @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead */\n")
-            ->write("public function getSource()\n", "{\n")
-            ->indent()
-            ->write("@trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED);\n\n")
-            ->write('return $this->getSourceContext()->getCode();')
-            ->raw("\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-
-    protected function compileGetSourceContext(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("public function getSourceContext()\n", "{\n")
-            ->indent()
-            ->write('return new Twig_Source(')
-            ->string($compiler->getEnvironment()->isDebug() ? $this->source->getCode() : '')
-            ->raw(', ')
-            ->string($this->source->getName())
-            ->raw(', ')
-            ->string($this->source->getPath())
-            ->raw(");\n")
-            ->outdent()
-            ->write("}\n")
-        ;
-    }
-
-    protected function compileLoadTemplate(Twig_Compiler $compiler, $node, $var)
-    {
-        if ($node instanceof Twig_Node_Expression_Constant) {
-            $compiler
-                ->write(sprintf('%s = $this->loadTemplate(', $var))
-                ->subcompile($node)
-                ->raw(', ')
-                ->repr($node->getTemplateName())
-                ->raw(', ')
-                ->repr($node->getTemplateLine())
-                ->raw(");\n")
-            ;
-        } else {
-            throw new LogicException('Trait templates can only be constant nodes.');
-        }
-    }
-}
-
-class_alias('Twig_Node_Module', 'Twig\Node\ModuleNode', false);
diff --git a/inc/lib/Twig/Node/Print.php b/inc/lib/Twig/Node/Print.php
deleted file mode 100644
index 374db89b..00000000
--- a/inc/lib/Twig/Node/Print.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a node that outputs an expression.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Print extends Twig_Node implements Twig_NodeOutputInterface
-{
-    public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)
-    {
-        parent::__construct(array('expr' => $expr), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write('echo ')
-            ->subcompile($this->getNode('expr'))
-            ->raw(";\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Print', 'Twig\Node\PrintNode', false);
diff --git a/inc/lib/Twig/Node/Sandbox.php b/inc/lib/Twig/Node/Sandbox.php
deleted file mode 100644
index 44b30ab9..00000000
--- a/inc/lib/Twig/Node/Sandbox.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a sandbox node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Sandbox extends Twig_Node
-{
-    public function __construct(Twig_NodeInterface $body, $lineno, $tag = null)
-    {
-        parent::__construct(array('body' => $body), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write("\$sandbox = \$this->env->getExtension('Twig_Extension_Sandbox');\n")
-            ->write("if (!\$alreadySandboxed = \$sandbox->isSandboxed()) {\n")
-            ->indent()
-            ->write("\$sandbox->enableSandbox();\n")
-            ->outdent()
-            ->write("}\n")
-            ->subcompile($this->getNode('body'))
-            ->write("if (!\$alreadySandboxed) {\n")
-            ->indent()
-            ->write("\$sandbox->disableSandbox();\n")
-            ->outdent()
-            ->write("}\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Sandbox', 'Twig\Node\SandboxNode', false);
diff --git a/inc/lib/Twig/Node/SandboxedModule.php b/inc/lib/Twig/Node/SandboxedModule.php
deleted file mode 100644
index be1f5daa..00000000
--- a/inc/lib/Twig/Node/SandboxedModule.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a module node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_SandboxedModule extends Twig_Node_Module
-{
-    protected $usedFilters;
-    protected $usedTags;
-    protected $usedFunctions;
-
-    public function __construct(Twig_Node_Module $node, array $usedFilters, array $usedTags, array $usedFunctions)
-    {
-        parent::__construct($node->getNode('body'), $node->getNode('parent'), $node->getNode('blocks'), $node->getNode('macros'), $node->getNode('traits'), $node->getAttribute('embedded_templates'), $node->getAttribute('filename'), $node->getLine(), $node->getNodeTag());
-
-        $this->setAttribute('index', $node->getAttribute('index'));
-
-        $this->usedFilters = $usedFilters;
-        $this->usedTags = $usedTags;
-        $this->usedFunctions = $usedFunctions;
-    }
-
-    protected function compileDisplayBody(Twig_Compiler $compiler)
-    {
-        $compiler->write("\$this->checkSecurity();\n");
-
-        parent::compileDisplayBody($compiler);
-    }
-
-    protected function compileDisplayFooter(Twig_Compiler $compiler)
-    {
-        parent::compileDisplayFooter($compiler);
-
-        $compiler
-            ->write("protected function checkSecurity()\n", "{\n")
-            ->indent()
-            ->write("\$this->env->getExtension('sandbox')->checkSecurity(\n")
-            ->indent()
-            ->write(!$this->usedTags ? "array(),\n" : "array('".implode('\', \'', $this->usedTags)."'),\n")
-            ->write(!$this->usedFilters ? "array(),\n" : "array('".implode('\', \'', $this->usedFilters)."'),\n")
-            ->write(!$this->usedFunctions ? "array()\n" : "array('".implode('\', \'', $this->usedFunctions)."')\n")
-            ->outdent()
-            ->write(");\n")
-            ->outdent()
-            ->write("}\n\n")
-        ;
-    }
-}
diff --git a/inc/lib/Twig/Node/SandboxedPrint.php b/inc/lib/Twig/Node/SandboxedPrint.php
deleted file mode 100644
index a08f21f5..00000000
--- a/inc/lib/Twig/Node/SandboxedPrint.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_Node_SandboxedPrint adds a check for the __toString() method
- * when the variable is an object and the sandbox is activated.
- *
- * When there is a simple Print statement, like {{ article }},
- * and if the sandbox is enabled, we need to check that the __toString()
- * method is allowed if 'article' is an object.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_SandboxedPrint extends Twig_Node_Print
-{
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write('echo $this->env->getExtension(\'Twig_Extension_Sandbox\')->ensureToStringAllowed(')
-            ->subcompile($this->getNode('expr'))
-            ->raw(");\n")
-        ;
-    }
-
-    /**
-     * Removes node filters.
-     *
-     * This is mostly needed when another visitor adds filters (like the escaper one).
-     *
-     * @return Twig_Node
-     */
-    protected function removeNodeFilter(Twig_Node $node)
-    {
-        if ($node instanceof Twig_Node_Expression_Filter) {
-            return $this->removeNodeFilter($node->getNode('node'));
-        }
-
-        return $node;
-    }
-}
-
-class_alias('Twig_Node_SandboxedPrint', 'Twig\Node\SandboxedPrintNode', false);
diff --git a/inc/lib/Twig/Node/Set.php b/inc/lib/Twig/Node/Set.php
deleted file mode 100644
index 6c6743ee..00000000
--- a/inc/lib/Twig/Node/Set.php
+++ /dev/null
@@ -1,98 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a set node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Set extends Twig_Node implements Twig_NodeCaptureInterface
-{
-    public function __construct($capture, Twig_NodeInterface $names, Twig_NodeInterface $values, $lineno, $tag = null)
-    {
-        parent::__construct(array('names' => $names, 'values' => $values), array('capture' => $capture, 'safe' => false), $lineno, $tag);
-
-        /*
-         * Optimizes the node when capture is used for a large block of text.
-         *
-         * {% set foo %}foo{% endset %} is compiled to $context['foo'] = new Twig_Markup("foo");
-         */
-        if ($this->getAttribute('capture')) {
-            $this->setAttribute('safe', true);
-
-            $values = $this->getNode('values');
-            if ($values instanceof Twig_Node_Text) {
-                $this->setNode('values', new Twig_Node_Expression_Constant($values->getAttribute('data'), $values->getTemplateLine()));
-                $this->setAttribute('capture', false);
-            }
-        }
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->addDebugInfo($this);
-
-        if (count($this->getNode('names')) > 1) {
-            $compiler->write('list(');
-            foreach ($this->getNode('names') as $idx => $node) {
-                if ($idx) {
-                    $compiler->raw(', ');
-                }
-
-                $compiler->subcompile($node);
-            }
-            $compiler->raw(')');
-        } else {
-            if ($this->getAttribute('capture')) {
-                $compiler
-                    ->write("ob_start();\n")
-                    ->subcompile($this->getNode('values'))
-                ;
-            }
-
-            $compiler->subcompile($this->getNode('names'), false);
-
-            if ($this->getAttribute('capture')) {
-                $compiler->raw(" = ('' === \$tmp = ob_get_clean()) ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset())");
-            }
-        }
-
-        if (!$this->getAttribute('capture')) {
-            $compiler->raw(' = ');
-
-            if (count($this->getNode('names')) > 1) {
-                $compiler->write('array(');
-                foreach ($this->getNode('values') as $idx => $value) {
-                    if ($idx) {
-                        $compiler->raw(', ');
-                    }
-
-                    $compiler->subcompile($value);
-                }
-                $compiler->raw(')');
-            } else {
-                if ($this->getAttribute('safe')) {
-                    $compiler
-                        ->raw("('' === \$tmp = ")
-                        ->subcompile($this->getNode('values'))
-                        ->raw(") ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset())")
-                    ;
-                } else {
-                    $compiler->subcompile($this->getNode('values'));
-                }
-            }
-        }
-
-        $compiler->raw(";\n");
-    }
-}
-
-class_alias('Twig_Node_Set', 'Twig\Node\SetNode', false);
diff --git a/inc/lib/Twig/Node/SetTemp.php b/inc/lib/Twig/Node/SetTemp.php
deleted file mode 100644
index 996fdcde..00000000
--- a/inc/lib/Twig/Node/SetTemp.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @internal
- */
-class Twig_Node_SetTemp extends Twig_Node
-{
-    public function __construct($name, $lineno)
-    {
-        parent::__construct(array(), array('name' => $name), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $name = $this->getAttribute('name');
-        $compiler
-            ->addDebugInfo($this)
-            ->write('if (isset($context[')
-            ->string($name)
-            ->raw('])) { $_')
-            ->raw($name)
-            ->raw('_ = $context[')
-            ->repr($name)
-            ->raw(']; } else { $_')
-            ->raw($name)
-            ->raw("_ = null; }\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_SetTemp', 'Twig\Node\SetTempNode', false);
diff --git a/inc/lib/Twig/Node/Spaceless.php b/inc/lib/Twig/Node/Spaceless.php
deleted file mode 100644
index 76f90cde..00000000
--- a/inc/lib/Twig/Node/Spaceless.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a spaceless node.
- *
- * It removes spaces between HTML tags.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Spaceless extends Twig_Node
-{
-    public function __construct(Twig_NodeInterface $body, $lineno, $tag = 'spaceless')
-    {
-        parent::__construct(array('body' => $body), array(), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write("ob_start();\n")
-            ->subcompile($this->getNode('body'))
-            ->write("echo trim(preg_replace('/>\s+</', '><', ob_get_clean()));\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Spaceless', 'Twig\Node\SpacelessNode', false);
diff --git a/inc/lib/Twig/Node/Text.php b/inc/lib/Twig/Node/Text.php
deleted file mode 100644
index f4577fee..00000000
--- a/inc/lib/Twig/Node/Text.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a text node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_Text extends Twig_Node implements Twig_NodeOutputInterface
-{
-    public function __construct($data, $lineno)
-    {
-        parent::__construct(array(), array('data' => $data), $lineno);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->addDebugInfo($this)
-            ->write('echo ')
-            ->string($this->getAttribute('data'))
-            ->raw(";\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_Text', 'Twig\Node\TextNode', false);
diff --git a/inc/lib/Twig/Node/With.php b/inc/lib/Twig/Node/With.php
deleted file mode 100644
index 2ab0ea5d..00000000
--- a/inc/lib/Twig/Node/With.php
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a nested "with" scope.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Node_With extends Twig_Node
-{
-    public function __construct(Twig_Node $body, Twig_Node $variables = null, $only = false, $lineno, $tag = null)
-    {
-        $nodes = array('body' => $body);
-        if (null !== $variables) {
-            $nodes['variables'] = $variables;
-        }
-
-        parent::__construct($nodes, array('only' => (bool) $only), $lineno, $tag);
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler->addDebugInfo($this);
-
-        if ($this->hasNode('variables')) {
-            $varsName = $compiler->getVarName();
-            $compiler
-                ->write(sprintf('$%s = ', $varsName))
-                ->subcompile($this->getNode('variables'))
-                ->raw(";\n")
-                ->write(sprintf("if (!is_array(\$%s)) {\n", $varsName))
-                ->indent()
-                ->write("throw new Twig_Error_Runtime('Variables passed to the \"with\" tag must be a hash.');\n")
-                ->outdent()
-                ->write("}\n")
-            ;
-
-            if ($this->getAttribute('only')) {
-                $compiler->write("\$context = array('_parent' => \$context);\n");
-            } else {
-                $compiler->write("\$context['_parent'] = \$context;\n");
-            }
-
-            $compiler->write(sprintf("\$context = array_merge(\$context, \$%s);\n", $varsName));
-        } else {
-            $compiler->write("\$context['_parent'] = \$context;\n");
-        }
-
-        $compiler
-            ->subcompile($this->getNode('body'))
-            ->write("\$context = \$context['_parent'];\n")
-        ;
-    }
-}
-
-class_alias('Twig_Node_With', 'Twig\Node\WithNode', false);
diff --git a/inc/lib/Twig/NodeCaptureInterface.php b/inc/lib/Twig/NodeCaptureInterface.php
deleted file mode 100644
index 6638834b..00000000
--- a/inc/lib/Twig/NodeCaptureInterface.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a node that captures any nested displayable nodes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_NodeCaptureInterface
-{
-}
-
-class_alias('Twig_NodeCaptureInterface', 'Twig\Node\NodeCaptureInterface', false);
diff --git a/inc/lib/Twig/NodeInterface.php b/inc/lib/Twig/NodeInterface.php
deleted file mode 100644
index 78e758bd..00000000
--- a/inc/lib/Twig/NodeInterface.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a node in the AST.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_NodeInterface extends Countable, IteratorAggregate
-{
-    /**
-     * Compiles the node to PHP.
-     */
-    public function compile(Twig_Compiler $compiler);
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getLine();
-
-    public function getNodeTag();
-}
diff --git a/inc/lib/Twig/NodeOutputInterface.php b/inc/lib/Twig/NodeOutputInterface.php
deleted file mode 100644
index 5a8eaa9c..00000000
--- a/inc/lib/Twig/NodeOutputInterface.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a displayable node in the AST.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_NodeOutputInterface
-{
-}
-
-class_alias('Twig_NodeOutputInterface', 'Twig\Node\NodeOutputInterface', false);
diff --git a/inc/lib/Twig/NodeTraverser.php b/inc/lib/Twig/NodeTraverser.php
deleted file mode 100644
index f00a0bf5..00000000
--- a/inc/lib/Twig/NodeTraverser.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_NodeTraverser is a node traverser.
- *
- * It visits all nodes and their children and calls the given visitor for each.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_NodeTraverser
-{
-    protected $env;
-    protected $visitors = array();
-
-    /**
-     * @param Twig_Environment            $env
-     * @param Twig_NodeVisitorInterface[] $visitors
-     */
-    public function __construct(Twig_Environment $env, array $visitors = array())
-    {
-        $this->env = $env;
-        foreach ($visitors as $visitor) {
-            $this->addVisitor($visitor);
-        }
-    }
-
-    public function addVisitor(Twig_NodeVisitorInterface $visitor)
-    {
-        if (!isset($this->visitors[$visitor->getPriority()])) {
-            $this->visitors[$visitor->getPriority()] = array();
-        }
-
-        $this->visitors[$visitor->getPriority()][] = $visitor;
-    }
-
-    /**
-     * Traverses a node and calls the registered visitors.
-     *
-     * @return Twig_NodeInterface
-     */
-    public function traverse(Twig_NodeInterface $node)
-    {
-        ksort($this->visitors);
-        foreach ($this->visitors as $visitors) {
-            foreach ($visitors as $visitor) {
-                $node = $this->traverseForVisitor($visitor, $node);
-            }
-        }
-
-        return $node;
-    }
-
-    protected function traverseForVisitor(Twig_NodeVisitorInterface $visitor, Twig_NodeInterface $node = null)
-    {
-        if (null === $node) {
-            return;
-        }
-
-        $node = $visitor->enterNode($node, $this->env);
-
-        foreach ($node as $k => $n) {
-            if (false !== $m = $this->traverseForVisitor($visitor, $n)) {
-                if ($m !== $n) {
-                    $node->setNode($k, $m);
-                }
-            } else {
-                $node->removeNode($k);
-            }
-        }
-
-        return $visitor->leaveNode($node, $this->env);
-    }
-}
-
-class_alias('Twig_NodeTraverser', 'Twig\NodeTraverser', false);
diff --git a/inc/lib/Twig/NodeVisitor/Escaper.php b/inc/lib/Twig/NodeVisitor/Escaper.php
deleted file mode 100644
index 1a1ae66f..00000000
--- a/inc/lib/Twig/NodeVisitor/Escaper.php
+++ /dev/null
@@ -1,154 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_NodeVisitor_Escaper implements output escaping.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_NodeVisitor_Escaper extends Twig_BaseNodeVisitor
-{
-    protected $statusStack = array();
-    protected $blocks = array();
-    protected $safeAnalysis;
-    protected $traverser;
-    protected $defaultStrategy = false;
-    protected $safeVars = array();
-
-    public function __construct()
-    {
-        $this->safeAnalysis = new Twig_NodeVisitor_SafeAnalysis();
-    }
-
-    protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Module) {
-            if ($env->hasExtension('Twig_Extension_Escaper') && $defaultStrategy = $env->getExtension('Twig_Extension_Escaper')->getDefaultStrategy($node->getTemplateName())) {
-                $this->defaultStrategy = $defaultStrategy;
-            }
-            $this->safeVars = array();
-            $this->blocks = array();
-        } elseif ($node instanceof Twig_Node_AutoEscape) {
-            $this->statusStack[] = $node->getAttribute('value');
-        } elseif ($node instanceof Twig_Node_Block) {
-            $this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
-        } elseif ($node instanceof Twig_Node_Import) {
-            $this->safeVars[] = $node->getNode('var')->getAttribute('name');
-        }
-
-        return $node;
-    }
-
-    protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Module) {
-            $this->defaultStrategy = false;
-            $this->safeVars = array();
-            $this->blocks = array();
-        } elseif ($node instanceof Twig_Node_Expression_Filter) {
-            return $this->preEscapeFilterNode($node, $env);
-        } elseif ($node instanceof Twig_Node_Print) {
-            return $this->escapePrintNode($node, $env, $this->needEscaping($env));
-        }
-
-        if ($node instanceof Twig_Node_AutoEscape || $node instanceof Twig_Node_Block) {
-            array_pop($this->statusStack);
-        } elseif ($node instanceof Twig_Node_BlockReference) {
-            $this->blocks[$node->getAttribute('name')] = $this->needEscaping($env);
-        }
-
-        return $node;
-    }
-
-    protected function escapePrintNode(Twig_Node_Print $node, Twig_Environment $env, $type)
-    {
-        if (false === $type) {
-            return $node;
-        }
-
-        $expression = $node->getNode('expr');
-
-        if ($this->isSafeFor($type, $expression, $env)) {
-            return $node;
-        }
-
-        $class = get_class($node);
-
-        return new $class(
-            $this->getEscaperFilter($type, $expression),
-            $node->getTemplateLine()
-        );
-    }
-
-    protected function preEscapeFilterNode(Twig_Node_Expression_Filter $filter, Twig_Environment $env)
-    {
-        $name = $filter->getNode('filter')->getAttribute('value');
-
-        $type = $env->getFilter($name)->getPreEscape();
-        if (null === $type) {
-            return $filter;
-        }
-
-        $node = $filter->getNode('node');
-        if ($this->isSafeFor($type, $node, $env)) {
-            return $filter;
-        }
-
-        $filter->setNode('node', $this->getEscaperFilter($type, $node));
-
-        return $filter;
-    }
-
-    protected function isSafeFor($type, Twig_NodeInterface $expression, $env)
-    {
-        $safe = $this->safeAnalysis->getSafe($expression);
-
-        if (null === $safe) {
-            if (null === $this->traverser) {
-                $this->traverser = new Twig_NodeTraverser($env, array($this->safeAnalysis));
-            }
-
-            $this->safeAnalysis->setSafeVars($this->safeVars);
-
-            $this->traverser->traverse($expression);
-            $safe = $this->safeAnalysis->getSafe($expression);
-        }
-
-        return in_array($type, $safe) || in_array('all', $safe);
-    }
-
-    protected function needEscaping(Twig_Environment $env)
-    {
-        if (count($this->statusStack)) {
-            return $this->statusStack[count($this->statusStack) - 1];
-        }
-
-        return $this->defaultStrategy ? $this->defaultStrategy : false;
-    }
-
-    protected function getEscaperFilter($type, Twig_NodeInterface $node)
-    {
-        $line = $node->getTemplateLine();
-        $name = new Twig_Node_Expression_Constant('escape', $line);
-        $args = new Twig_Node(array(new Twig_Node_Expression_Constant((string) $type, $line), new Twig_Node_Expression_Constant(null, $line), new Twig_Node_Expression_Constant(true, $line)));
-
-        return new Twig_Node_Expression_Filter($node, $name, $args, $line);
-    }
-
-    public function getPriority()
-    {
-        return 0;
-    }
-}
-
-class_alias('Twig_NodeVisitor_Escaper', 'Twig\NodeVisitor\EscaperNodeVisitor', false);
diff --git a/inc/lib/Twig/NodeVisitor/Optimizer.php b/inc/lib/Twig/NodeVisitor/Optimizer.php
deleted file mode 100644
index c55e40ff..00000000
--- a/inc/lib/Twig/NodeVisitor/Optimizer.php
+++ /dev/null
@@ -1,253 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_NodeVisitor_Optimizer tries to optimizes the AST.
- *
- * This visitor is always the last registered one.
- *
- * You can configure which optimizations you want to activate via the
- * optimizer mode.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_NodeVisitor_Optimizer extends Twig_BaseNodeVisitor
-{
-    const OPTIMIZE_ALL = -1;
-    const OPTIMIZE_NONE = 0;
-    const OPTIMIZE_FOR = 2;
-    const OPTIMIZE_RAW_FILTER = 4;
-    const OPTIMIZE_VAR_ACCESS = 8;
-
-    protected $loops = array();
-    protected $loopsTargets = array();
-    protected $optimizers;
-    protected $prependedNodes = array();
-    protected $inABody = false;
-
-    /**
-     * @param int $optimizers The optimizer mode
-     */
-    public function __construct($optimizers = -1)
-    {
-        if (!is_int($optimizers) || $optimizers > (self::OPTIMIZE_FOR | self::OPTIMIZE_RAW_FILTER | self::OPTIMIZE_VAR_ACCESS)) {
-            throw new InvalidArgumentException(sprintf('Optimizer mode "%s" is not valid.', $optimizers));
-        }
-
-        $this->optimizers = $optimizers;
-    }
-
-    protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
-            $this->enterOptimizeFor($node, $env);
-        }
-
-        if (PHP_VERSION_ID < 50400 && self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('Twig_Extension_Sandbox')) {
-            if ($this->inABody) {
-                if (!$node instanceof Twig_Node_Expression) {
-                    if ('Twig_Node' !== get_class($node)) {
-                        array_unshift($this->prependedNodes, array());
-                    }
-                } else {
-                    $node = $this->optimizeVariables($node, $env);
-                }
-            } elseif ($node instanceof Twig_Node_Body) {
-                $this->inABody = true;
-            }
-        }
-
-        return $node;
-    }
-
-    protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
-    {
-        $expression = $node instanceof Twig_Node_Expression;
-
-        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
-            $this->leaveOptimizeFor($node, $env);
-        }
-
-        if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) {
-            $node = $this->optimizeRawFilter($node, $env);
-        }
-
-        $node = $this->optimizePrintNode($node, $env);
-
-        if (self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('Twig_Extension_Sandbox')) {
-            if ($node instanceof Twig_Node_Body) {
-                $this->inABody = false;
-            } elseif ($this->inABody) {
-                if (!$expression && 'Twig_Node' !== get_class($node) && $prependedNodes = array_shift($this->prependedNodes)) {
-                    $nodes = array();
-                    foreach (array_unique($prependedNodes) as $name) {
-                        $nodes[] = new Twig_Node_SetTemp($name, $node->getTemplateLine());
-                    }
-
-                    $nodes[] = $node;
-                    $node = new Twig_Node($nodes);
-                }
-            }
-        }
-
-        return $node;
-    }
-
-    protected function optimizeVariables(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if ('Twig_Node_Expression_Name' === get_class($node) && $node->isSimple()) {
-            $this->prependedNodes[0][] = $node->getAttribute('name');
-
-            return new Twig_Node_Expression_TempName($node->getAttribute('name'), $node->getTemplateLine());
-        }
-
-        return $node;
-    }
-
-    /**
-     * Optimizes print nodes.
-     *
-     * It replaces:
-     *
-     *   * "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()"
-     *
-     * @return Twig_NodeInterface
-     */
-    protected function optimizePrintNode(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if (!$node instanceof Twig_Node_Print) {
-            return $node;
-        }
-
-        $exprNode = $node->getNode('expr');
-        if (
-            $exprNode instanceof Twig_Node_Expression_BlockReference ||
-            $exprNode instanceof Twig_Node_Expression_Parent
-        ) {
-            $exprNode->setAttribute('output', true);
-
-            return $exprNode;
-        }
-
-        return $node;
-    }
-
-    /**
-     * Removes "raw" filters.
-     *
-     * @return Twig_NodeInterface
-     */
-    protected function optimizeRawFilter(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Expression_Filter && 'raw' == $node->getNode('filter')->getAttribute('value')) {
-            return $node->getNode('node');
-        }
-
-        return $node;
-    }
-
-    /**
-     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
-     */
-    protected function enterOptimizeFor(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_For) {
-            // disable the loop variable by default
-            $node->setAttribute('with_loop', false);
-            array_unshift($this->loops, $node);
-            array_unshift($this->loopsTargets, $node->getNode('value_target')->getAttribute('name'));
-            array_unshift($this->loopsTargets, $node->getNode('key_target')->getAttribute('name'));
-        } elseif (!$this->loops) {
-            // we are outside a loop
-            return;
-        }
-
-        // when do we need to add the loop variable back?
-
-        // the loop variable is referenced for the current loop
-        elseif ($node instanceof Twig_Node_Expression_Name && 'loop' === $node->getAttribute('name')) {
-            $node->setAttribute('always_defined', true);
-            $this->addLoopToCurrent();
-        }
-
-        // optimize access to loop targets
-        elseif ($node instanceof Twig_Node_Expression_Name && in_array($node->getAttribute('name'), $this->loopsTargets)) {
-            $node->setAttribute('always_defined', true);
-        }
-
-        // block reference
-        elseif ($node instanceof Twig_Node_BlockReference || $node instanceof Twig_Node_Expression_BlockReference) {
-            $this->addLoopToCurrent();
-        }
-
-        // include without the only attribute
-        elseif ($node instanceof Twig_Node_Include && !$node->getAttribute('only')) {
-            $this->addLoopToAll();
-        }
-
-        // include function without the with_context=false parameter
-        elseif ($node instanceof Twig_Node_Expression_Function
-            && 'include' === $node->getAttribute('name')
-            && (!$node->getNode('arguments')->hasNode('with_context')
-                 || false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value')
-               )
-        ) {
-            $this->addLoopToAll();
-        }
-
-        // the loop variable is referenced via an attribute
-        elseif ($node instanceof Twig_Node_Expression_GetAttr
-            && (!$node->getNode('attribute') instanceof Twig_Node_Expression_Constant
-                || 'parent' === $node->getNode('attribute')->getAttribute('value')
-               )
-            && (true === $this->loops[0]->getAttribute('with_loop')
-                || ($node->getNode('node') instanceof Twig_Node_Expression_Name
-                    && 'loop' === $node->getNode('node')->getAttribute('name')
-                   )
-               )
-        ) {
-            $this->addLoopToAll();
-        }
-    }
-
-    /**
-     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
-     */
-    protected function leaveOptimizeFor(Twig_NodeInterface $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_For) {
-            array_shift($this->loops);
-            array_shift($this->loopsTargets);
-            array_shift($this->loopsTargets);
-        }
-    }
-
-    protected function addLoopToCurrent()
-    {
-        $this->loops[0]->setAttribute('with_loop', true);
-    }
-
-    protected function addLoopToAll()
-    {
-        foreach ($this->loops as $loop) {
-            $loop->setAttribute('with_loop', true);
-        }
-    }
-
-    public function getPriority()
-    {
-        return 255;
-    }
-}
-
-class_alias('Twig_NodeVisitor_Optimizer', 'Twig\NodeVisitor\OptimizerNodeVisitor', false);
diff --git a/inc/lib/Twig/NodeVisitor/SafeAnalysis.php b/inc/lib/Twig/NodeVisitor/SafeAnalysis.php
deleted file mode 100644
index ca31c8fc..00000000
--- a/inc/lib/Twig/NodeVisitor/SafeAnalysis.php
+++ /dev/null
@@ -1,150 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @final
- */
-class Twig_NodeVisitor_SafeAnalysis extends Twig_BaseNodeVisitor
-{
-    protected $data = array();
-    protected $safeVars = array();
-
-    public function setSafeVars($safeVars)
-    {
-        $this->safeVars = $safeVars;
-    }
-
-    public function getSafe(Twig_NodeInterface $node)
-    {
-        $hash = spl_object_hash($node);
-        if (!isset($this->data[$hash])) {
-            return;
-        }
-
-        foreach ($this->data[$hash] as $bucket) {
-            if ($bucket['key'] !== $node) {
-                continue;
-            }
-
-            if (in_array('html_attr', $bucket['value'])) {
-                $bucket['value'][] = 'html';
-            }
-
-            return $bucket['value'];
-        }
-    }
-
-    protected function setSafe(Twig_NodeInterface $node, array $safe)
-    {
-        $hash = spl_object_hash($node);
-        if (isset($this->data[$hash])) {
-            foreach ($this->data[$hash] as &$bucket) {
-                if ($bucket['key'] === $node) {
-                    $bucket['value'] = $safe;
-
-                    return;
-                }
-            }
-        }
-        $this->data[$hash][] = array(
-            'key' => $node,
-            'value' => $safe,
-        );
-    }
-
-    protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
-    {
-        return $node;
-    }
-
-    protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Expression_Constant) {
-            // constants are marked safe for all
-            $this->setSafe($node, array('all'));
-        } elseif ($node instanceof Twig_Node_Expression_BlockReference) {
-            // blocks are safe by definition
-            $this->setSafe($node, array('all'));
-        } elseif ($node instanceof Twig_Node_Expression_Parent) {
-            // parent block is safe by definition
-            $this->setSafe($node, array('all'));
-        } elseif ($node instanceof Twig_Node_Expression_Conditional) {
-            // intersect safeness of both operands
-            $safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
-            $this->setSafe($node, $safe);
-        } elseif ($node instanceof Twig_Node_Expression_Filter) {
-            // filter expression is safe when the filter is safe
-            $name = $node->getNode('filter')->getAttribute('value');
-            $args = $node->getNode('arguments');
-            if (false !== $filter = $env->getFilter($name)) {
-                $safe = $filter->getSafe($args);
-                if (null === $safe) {
-                    $safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety());
-                }
-                $this->setSafe($node, $safe);
-            } else {
-                $this->setSafe($node, array());
-            }
-        } elseif ($node instanceof Twig_Node_Expression_Function) {
-            // function expression is safe when the function is safe
-            $name = $node->getAttribute('name');
-            $args = $node->getNode('arguments');
-            $function = $env->getFunction($name);
-            if (false !== $function) {
-                $this->setSafe($node, $function->getSafe($args));
-            } else {
-                $this->setSafe($node, array());
-            }
-        } elseif ($node instanceof Twig_Node_Expression_MethodCall) {
-            if ($node->getAttribute('safe')) {
-                $this->setSafe($node, array('all'));
-            } else {
-                $this->setSafe($node, array());
-            }
-        } elseif ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name) {
-            $name = $node->getNode('node')->getAttribute('name');
-            // attributes on template instances are safe
-            if ('_self' == $name || in_array($name, $this->safeVars)) {
-                $this->setSafe($node, array('all'));
-            } else {
-                $this->setSafe($node, array());
-            }
-        } else {
-            $this->setSafe($node, array());
-        }
-
-        return $node;
-    }
-
-    protected function intersectSafe(array $a = null, array $b = null)
-    {
-        if (null === $a || null === $b) {
-            return array();
-        }
-
-        if (in_array('all', $a)) {
-            return $b;
-        }
-
-        if (in_array('all', $b)) {
-            return $a;
-        }
-
-        return array_intersect($a, $b);
-    }
-
-    public function getPriority()
-    {
-        return 0;
-    }
-}
-
-class_alias('Twig_NodeVisitor_SafeAnalysis', 'Twig\NodeVisitor\SafeAnalysisNodeVisitor', false);
diff --git a/inc/lib/Twig/NodeVisitor/Sandbox.php b/inc/lib/Twig/NodeVisitor/Sandbox.php
deleted file mode 100644
index 71aa4f02..00000000
--- a/inc/lib/Twig/NodeVisitor/Sandbox.php
+++ /dev/null
@@ -1,82 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_NodeVisitor_Sandbox implements sandboxing.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_NodeVisitor_Sandbox extends Twig_BaseNodeVisitor
-{
-    protected $inAModule = false;
-    protected $tags;
-    protected $filters;
-    protected $functions;
-
-    protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Module) {
-            $this->inAModule = true;
-            $this->tags = array();
-            $this->filters = array();
-            $this->functions = array();
-
-            return $node;
-        } elseif ($this->inAModule) {
-            // look for tags
-            if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {
-                $this->tags[$node->getNodeTag()] = $node;
-            }
-
-            // look for filters
-            if ($node instanceof Twig_Node_Expression_Filter && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {
-                $this->filters[$node->getNode('filter')->getAttribute('value')] = $node;
-            }
-
-            // look for functions
-            if ($node instanceof Twig_Node_Expression_Function && !isset($this->functions[$node->getAttribute('name')])) {
-                $this->functions[$node->getAttribute('name')] = $node;
-            }
-
-            // the .. operator is equivalent to the range() function
-            if ($node instanceof Twig_Node_Expression_Binary_Range && !isset($this->functions['range'])) {
-                $this->functions['range'] = $node;
-            }
-
-            // wrap print to check __toString() calls
-            if ($node instanceof Twig_Node_Print) {
-                return new Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getTemplateLine(), $node->getNodeTag());
-            }
-        }
-
-        return $node;
-    }
-
-    protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Module) {
-            $this->inAModule = false;
-
-            $node->setNode('display_start', new Twig_Node(array(new Twig_Node_CheckSecurity($this->filters, $this->tags, $this->functions), $node->getNode('display_start'))));
-        }
-
-        return $node;
-    }
-
-    public function getPriority()
-    {
-        return 0;
-    }
-}
-
-class_alias('Twig_NodeVisitor_Sandbox', 'Twig\NodeVisitor\SandboxNodeVisitor', false);
diff --git a/inc/lib/Twig/NodeVisitorInterface.php b/inc/lib/Twig/NodeVisitorInterface.php
deleted file mode 100644
index 1270a372..00000000
--- a/inc/lib/Twig/NodeVisitorInterface.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Twig_NodeVisitorInterface is the interface the all node visitor classes must implement.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_NodeVisitorInterface
-{
-    /**
-     * Called before child nodes are visited.
-     *
-     * @return Twig_NodeInterface The modified node
-     */
-    public function enterNode(Twig_NodeInterface $node, Twig_Environment $env);
-
-    /**
-     * Called after child nodes are visited.
-     *
-     * @return Twig_NodeInterface|false The modified node or false if the node must be removed
-     */
-    public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env);
-
-    /**
-     * Returns the priority for this visitor.
-     *
-     * Priority should be between -10 and 10 (0 is the default).
-     *
-     * @return int The priority level
-     */
-    public function getPriority();
-}
-
-class_alias('Twig_NodeVisitorInterface', 'Twig\NodeVisitor\NodeVisitorInterface', false);
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
diff --git a/inc/lib/Twig/Parser.php b/inc/lib/Twig/Parser.php
deleted file mode 100644
index 6de879a5..00000000
--- a/inc/lib/Twig/Parser.php
+++ /dev/null
@@ -1,412 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Default parser implementation.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Parser implements Twig_ParserInterface
-{
-    protected $stack = array();
-    protected $stream;
-    protected $parent;
-    protected $handlers;
-    protected $visitors;
-    protected $expressionParser;
-    protected $blocks;
-    protected $blockStack;
-    protected $macros;
-    protected $env;
-    protected $reservedMacroNames;
-    protected $importedSymbols;
-    protected $traits;
-    protected $embeddedTemplates = array();
-    private $varNameSalt = 0;
-
-    public function __construct(Twig_Environment $env)
-    {
-        $this->env = $env;
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getEnvironment()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-        return $this->env;
-    }
-
-    public function getVarName()
-    {
-        return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->stream->getSourceContext()->getCode().$this->varNameSalt++));
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0). Use $parser->getStream()->getSourceContext()->getPath() instead.
-     */
-    public function getFilename()
-    {
-        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use $parser->getStream()->getSourceContext()->getPath() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->stream->getSourceContext()->getName();
-    }
-
-    public function parse(Twig_TokenStream $stream, $test = null, $dropNeedle = false)
-    {
-        // push all variables into the stack to keep the current state of the parser
-        // using get_object_vars() instead of foreach would lead to https://bugs.php.net/71336
-        // This hack can be removed when min version if PHP 7.0
-        $vars = array();
-        foreach ($this as $k => $v) {
-            $vars[$k] = $v;
-        }
-
-        unset($vars['stack'], $vars['env'], $vars['handlers'], $vars['visitors'], $vars['expressionParser'], $vars['reservedMacroNames']);
-        $this->stack[] = $vars;
-
-        // tag handlers
-        if (null === $this->handlers) {
-            $this->handlers = $this->env->getTokenParsers();
-            $this->handlers->setParser($this);
-        }
-
-        // node visitors
-        if (null === $this->visitors) {
-            $this->visitors = $this->env->getNodeVisitors();
-        }
-
-        if (null === $this->expressionParser) {
-            $this->expressionParser = new Twig_ExpressionParser($this, $this->env);
-        }
-
-        $this->stream = $stream;
-        $this->parent = null;
-        $this->blocks = array();
-        $this->macros = array();
-        $this->traits = array();
-        $this->blockStack = array();
-        $this->importedSymbols = array(array());
-        $this->embeddedTemplates = array();
-        $this->varNameSalt = 0;
-
-        try {
-            $body = $this->subparse($test, $dropNeedle);
-
-            if (null !== $this->parent && null === $body = $this->filterBodyNodes($body)) {
-                $body = new Twig_Node();
-            }
-        } catch (Twig_Error_Syntax $e) {
-            if (!$e->getSourceContext()) {
-                $e->setSourceContext($this->stream->getSourceContext());
-            }
-
-            if (!$e->getTemplateLine()) {
-                $e->setTemplateLine($this->stream->getCurrent()->getLine());
-            }
-
-            throw $e;
-        }
-
-        $node = new Twig_Node_Module(new Twig_Node_Body(array($body)), $this->parent, new Twig_Node($this->blocks), new Twig_Node($this->macros), new Twig_Node($this->traits), $this->embeddedTemplates, $stream->getSourceContext());
-
-        $traverser = new Twig_NodeTraverser($this->env, $this->visitors);
-
-        $node = $traverser->traverse($node);
-
-        // restore previous stack so previous parse() call can resume working
-        foreach (array_pop($this->stack) as $key => $val) {
-            $this->$key = $val;
-        }
-
-        return $node;
-    }
-
-    public function subparse($test, $dropNeedle = false)
-    {
-        $lineno = $this->getCurrentToken()->getLine();
-        $rv = array();
-        while (!$this->stream->isEOF()) {
-            switch ($this->getCurrentToken()->getType()) {
-                case Twig_Token::TEXT_TYPE:
-                    $token = $this->stream->next();
-                    $rv[] = new Twig_Node_Text($token->getValue(), $token->getLine());
-                    break;
-
-                case Twig_Token::VAR_START_TYPE:
-                    $token = $this->stream->next();
-                    $expr = $this->expressionParser->parseExpression();
-                    $this->stream->expect(Twig_Token::VAR_END_TYPE);
-                    $rv[] = new Twig_Node_Print($expr, $token->getLine());
-                    break;
-
-                case Twig_Token::BLOCK_START_TYPE:
-                    $this->stream->next();
-                    $token = $this->getCurrentToken();
-
-                    if (Twig_Token::NAME_TYPE !== $token->getType()) {
-                        throw new Twig_Error_Syntax('A block must start with a tag name.', $token->getLine(), $this->stream->getSourceContext());
-                    }
-
-                    if (null !== $test && call_user_func($test, $token)) {
-                        if ($dropNeedle) {
-                            $this->stream->next();
-                        }
-
-                        if (1 === count($rv)) {
-                            return $rv[0];
-                        }
-
-                        return new Twig_Node($rv, array(), $lineno);
-                    }
-
-                    $subparser = $this->handlers->getTokenParser($token->getValue());
-                    if (null === $subparser) {
-                        if (null !== $test) {
-                            $e = new Twig_Error_Syntax(sprintf('Unexpected "%s" tag', $token->getValue()), $token->getLine(), $this->stream->getSourceContext());
-
-                            if (is_array($test) && isset($test[0]) && $test[0] instanceof Twig_TokenParserInterface) {
-                                $e->appendMessage(sprintf(' (expecting closing tag for the "%s" tag defined near line %s).', $test[0]->getTag(), $lineno));
-                            }
-                        } else {
-                            $e = new Twig_Error_Syntax(sprintf('Unknown "%s" tag.', $token->getValue()), $token->getLine(), $this->stream->getSourceContext());
-                            $e->addSuggestions($token->getValue(), array_keys($this->env->getTags()));
-                        }
-
-                        throw $e;
-                    }
-
-                    $this->stream->next();
-
-                    $node = $subparser->parse($token);
-                    if (null !== $node) {
-                        $rv[] = $node;
-                    }
-                    break;
-
-                default:
-                    throw new Twig_Error_Syntax('Lexer or parser ended up in unsupported state.', $this->getCurrentToken()->getLine(), $this->stream->getSourceContext());
-            }
-        }
-
-        if (1 === count($rv)) {
-            return $rv[0];
-        }
-
-        return new Twig_Node($rv, array(), $lineno);
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function addHandler($name, $class)
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-        $this->handlers[$name] = $class;
-    }
-
-    /**
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-        $this->visitors[] = $visitor;
-    }
-
-    public function getBlockStack()
-    {
-        return $this->blockStack;
-    }
-
-    public function peekBlockStack()
-    {
-        return $this->blockStack[count($this->blockStack) - 1];
-    }
-
-    public function popBlockStack()
-    {
-        array_pop($this->blockStack);
-    }
-
-    public function pushBlockStack($name)
-    {
-        $this->blockStack[] = $name;
-    }
-
-    public function hasBlock($name)
-    {
-        return isset($this->blocks[$name]);
-    }
-
-    public function getBlock($name)
-    {
-        return $this->blocks[$name];
-    }
-
-    public function setBlock($name, Twig_Node_Block $value)
-    {
-        $this->blocks[$name] = new Twig_Node_Body(array($value), array(), $value->getTemplateLine());
-    }
-
-    public function hasMacro($name)
-    {
-        return isset($this->macros[$name]);
-    }
-
-    public function setMacro($name, Twig_Node_Macro $node)
-    {
-        if ($this->isReservedMacroName($name)) {
-            throw new Twig_Error_Syntax(sprintf('"%s" cannot be used as a macro name as it is a reserved keyword.', $name), $node->getTemplateLine(), $this->stream->getSourceContext());
-        }
-
-        $this->macros[$name] = $node;
-    }
-
-    public function isReservedMacroName($name)
-    {
-        if (null === $this->reservedMacroNames) {
-            $this->reservedMacroNames = array();
-            $r = new ReflectionClass($this->env->getBaseTemplateClass());
-            foreach ($r->getMethods() as $method) {
-                $methodName = strtolower($method->getName());
-
-                if ('get' === substr($methodName, 0, 3) && isset($methodName[3])) {
-                    $this->reservedMacroNames[] = substr($methodName, 3);
-                }
-            }
-        }
-
-        return in_array(strtolower($name), $this->reservedMacroNames);
-    }
-
-    public function addTrait($trait)
-    {
-        $this->traits[] = $trait;
-    }
-
-    public function hasTraits()
-    {
-        return count($this->traits) > 0;
-    }
-
-    public function embedTemplate(Twig_Node_Module $template)
-    {
-        $template->setIndex(mt_rand());
-
-        $this->embeddedTemplates[] = $template;
-    }
-
-    public function addImportedSymbol($type, $alias, $name = null, Twig_Node_Expression $node = null)
-    {
-        $this->importedSymbols[0][$type][$alias] = array('name' => $name, 'node' => $node);
-    }
-
-    public function getImportedSymbol($type, $alias)
-    {
-        foreach ($this->importedSymbols as $functions) {
-            if (isset($functions[$type][$alias])) {
-                return $functions[$type][$alias];
-            }
-        }
-    }
-
-    public function isMainScope()
-    {
-        return 1 === count($this->importedSymbols);
-    }
-
-    public function pushLocalScope()
-    {
-        array_unshift($this->importedSymbols, array());
-    }
-
-    public function popLocalScope()
-    {
-        array_shift($this->importedSymbols);
-    }
-
-    /**
-     * @return Twig_ExpressionParser
-     */
-    public function getExpressionParser()
-    {
-        return $this->expressionParser;
-    }
-
-    public function getParent()
-    {
-        return $this->parent;
-    }
-
-    public function setParent($parent)
-    {
-        $this->parent = $parent;
-    }
-
-    /**
-     * @return Twig_TokenStream
-     */
-    public function getStream()
-    {
-        return $this->stream;
-    }
-
-    /**
-     * @return Twig_Token
-     */
-    public function getCurrentToken()
-    {
-        return $this->stream->getCurrent();
-    }
-
-    protected function filterBodyNodes(Twig_NodeInterface $node)
-    {
-        // check that the body does not contain non-empty output nodes
-        if (
-            ($node instanceof Twig_Node_Text && !ctype_space($node->getAttribute('data')))
-            ||
-            (!$node instanceof Twig_Node_Text && !$node instanceof Twig_Node_BlockReference && $node instanceof Twig_NodeOutputInterface)
-        ) {
-            if (false !== strpos((string) $node, chr(0xEF).chr(0xBB).chr(0xBF))) {
-                throw new Twig_Error_Syntax('A template that extends another one cannot start with a byte order mark (BOM); it must be removed.', $node->getTemplateLine(), $this->stream->getSourceContext());
-            }
-
-            throw new Twig_Error_Syntax('A template that extends another one cannot include content outside Twig blocks. Did you forget to put the content inside a {% block %} tag?', $node->getTemplateLine(), $this->stream->getSourceContext());
-        }
-
-        // bypass nodes that will "capture" the output
-        if ($node instanceof Twig_NodeCaptureInterface) {
-            return $node;
-        }
-
-        if ($node instanceof Twig_NodeOutputInterface) {
-            return;
-        }
-
-        foreach ($node as $k => $n) {
-            if (null !== $n && null === $this->filterBodyNodes($n)) {
-                $node->removeNode($k);
-            }
-        }
-
-        return $node;
-    }
-}
-
-class_alias('Twig_Parser', 'Twig\Parser', false);
-class_exists('Twig_Node');
-class_exists('Twig_TokenStream');
diff --git a/inc/lib/Twig/ParserInterface.php b/inc/lib/Twig/ParserInterface.php
deleted file mode 100644
index 85c6e67b..00000000
--- a/inc/lib/Twig/ParserInterface.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by parser classes.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_ParserInterface
-{
-    /**
-     * Converts a token stream to a node tree.
-     *
-     * @return Twig_Node_Module
-     *
-     * @throws Twig_Error_Syntax When the token stream is syntactically or semantically wrong
-     */
-    public function parse(Twig_TokenStream $stream);
-}
diff --git a/inc/lib/Twig/Profiler/Dumper/Base.php b/inc/lib/Twig/Profiler/Dumper/Base.php
deleted file mode 100644
index 913afd4f..00000000
--- a/inc/lib/Twig/Profiler/Dumper/Base.php
+++ /dev/null
@@ -1,62 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- */
-abstract class Twig_Profiler_Dumper_Base
-{
-    private $root;
-
-    public function dump(Twig_Profiler_Profile $profile)
-    {
-        return $this->dumpProfile($profile);
-    }
-
-    abstract protected function formatTemplate(Twig_Profiler_Profile $profile, $prefix);
-
-    abstract protected function formatNonTemplate(Twig_Profiler_Profile $profile, $prefix);
-
-    abstract protected function formatTime(Twig_Profiler_Profile $profile, $percent);
-
-    private function dumpProfile(Twig_Profiler_Profile $profile, $prefix = '', $sibling = false)
-    {
-        if ($profile->isRoot()) {
-            $this->root = $profile->getDuration();
-            $start = $profile->getName();
-        } else {
-            if ($profile->isTemplate()) {
-                $start = $this->formatTemplate($profile, $prefix);
-            } else {
-                $start = $this->formatNonTemplate($profile, $prefix);
-            }
-            $prefix .= $sibling ? '│ ' : '  ';
-        }
-
-        $percent = $this->root ? $profile->getDuration() / $this->root * 100 : 0;
-
-        if ($profile->getDuration() * 1000 < 1) {
-            $str = $start."\n";
-        } else {
-            $str = sprintf("%s %s\n", $start, $this->formatTime($profile, $percent));
-        }
-
-        $nCount = count($profile->getProfiles());
-        foreach ($profile as $i => $p) {
-            $str .= $this->dumpProfile($p, $prefix, $i + 1 !== $nCount);
-        }
-
-        return $str;
-    }
-}
-
-class_alias('Twig_Profiler_Dumper_Base', 'Twig\Profiler\Dumper\BaseDumper', false);
-class_exists('Twig_Profiler_Profile');
diff --git a/inc/lib/Twig/Profiler/Dumper/Blackfire.php b/inc/lib/Twig/Profiler/Dumper/Blackfire.php
deleted file mode 100644
index 7a33baf2..00000000
--- a/inc/lib/Twig/Profiler/Dumper/Blackfire.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Profiler_Dumper_Blackfire
-{
-    public function dump(Twig_Profiler_Profile $profile)
-    {
-        $data = array();
-        $this->dumpProfile('main()', $profile, $data);
-        $this->dumpChildren('main()', $profile, $data);
-
-        $start = sprintf('%f', microtime(true));
-        $str = <<<EOF
-file-format: BlackfireProbe
-cost-dimensions: wt mu pmu
-request-start: {$start}
-
-
-EOF;
-
-        foreach ($data as $name => $values) {
-            $str .= "{$name}//{$values['ct']} {$values['wt']} {$values['mu']} {$values['pmu']}\n";
-        }
-
-        return $str;
-    }
-
-    private function dumpChildren($parent, Twig_Profiler_Profile $profile, &$data)
-    {
-        foreach ($profile as $p) {
-            if ($p->isTemplate()) {
-                $name = $p->getTemplate();
-            } else {
-                $name = sprintf('%s::%s(%s)', $p->getTemplate(), $p->getType(), $p->getName());
-            }
-            $this->dumpProfile(sprintf('%s==>%s', $parent, $name), $p, $data);
-            $this->dumpChildren($name, $p, $data);
-        }
-    }
-
-    private function dumpProfile($edge, Twig_Profiler_Profile $profile, &$data)
-    {
-        if (isset($data[$edge])) {
-            $data[$edge]['ct'] += 1;
-            $data[$edge]['wt'] += floor($profile->getDuration() * 1000000);
-            $data[$edge]['mu'] += $profile->getMemoryUsage();
-            $data[$edge]['pmu'] += $profile->getPeakMemoryUsage();
-        } else {
-            $data[$edge] = array(
-                'ct' => 1,
-                'wt' => floor($profile->getDuration() * 1000000),
-                'mu' => $profile->getMemoryUsage(),
-                'pmu' => $profile->getPeakMemoryUsage(),
-            );
-        }
-    }
-}
-
-class_alias('Twig_Profiler_Dumper_Blackfire', 'Twig\Profiler\Dumper\BlackfireDumper', false);
diff --git a/inc/lib/Twig/Profiler/Dumper/Html.php b/inc/lib/Twig/Profiler/Dumper/Html.php
deleted file mode 100644
index b57a2551..00000000
--- a/inc/lib/Twig/Profiler/Dumper/Html.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Profiler_Dumper_Html extends Twig_Profiler_Dumper_Base
-{
-    private static $colors = array(
-        'block' => '#dfd',
-        'macro' => '#ddf',
-        'template' => '#ffd',
-        'big' => '#d44',
-    );
-
-    public function dump(Twig_Profiler_Profile $profile)
-    {
-        return '<pre>'.parent::dump($profile).'</pre>';
-    }
-
-    protected function formatTemplate(Twig_Profiler_Profile $profile, $prefix)
-    {
-        return sprintf('%s└ <span style="background-color: %s">%s</span>', $prefix, self::$colors['template'], $profile->getTemplate());
-    }
-
-    protected function formatNonTemplate(Twig_Profiler_Profile $profile, $prefix)
-    {
-        return sprintf('%s└ %s::%s(<span style="background-color: %s">%s</span>)', $prefix, $profile->getTemplate(), $profile->getType(), isset(self::$colors[$profile->getType()]) ? self::$colors[$profile->getType()] : 'auto', $profile->getName());
-    }
-
-    protected function formatTime(Twig_Profiler_Profile $profile, $percent)
-    {
-        return sprintf('<span style="color: %s">%.2fms/%.0f%%</span>', $percent > 20 ? self::$colors['big'] : 'auto', $profile->getDuration() * 1000, $percent);
-    }
-}
-
-class_alias('Twig_Profiler_Dumper_Html', 'Twig\Profiler\Dumper\HtmlDumper', false);
diff --git a/inc/lib/Twig/Profiler/Dumper/Text.php b/inc/lib/Twig/Profiler/Dumper/Text.php
deleted file mode 100644
index 69d2c4bf..00000000
--- a/inc/lib/Twig/Profiler/Dumper/Text.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Profiler_Dumper_Text extends Twig_Profiler_Dumper_Base
-{
-    protected function formatTemplate(Twig_Profiler_Profile $profile, $prefix)
-    {
-        return sprintf('%s└ %s', $prefix, $profile->getTemplate());
-    }
-
-    protected function formatNonTemplate(Twig_Profiler_Profile $profile, $prefix)
-    {
-        return sprintf('%s└ %s::%s(%s)', $prefix, $profile->getTemplate(), $profile->getType(), $profile->getName());
-    }
-
-    protected function formatTime(Twig_Profiler_Profile $profile, $percent)
-    {
-        return sprintf('%.2fms/%.0f%%', $profile->getDuration() * 1000, $percent);
-    }
-}
-
-class_alias('Twig_Profiler_Dumper_Text', 'Twig\Profiler\Dumper\TextDumper', false);
diff --git a/inc/lib/Twig/Profiler/Node/EnterProfile.php b/inc/lib/Twig/Profiler/Node/EnterProfile.php
deleted file mode 100644
index 69c8f797..00000000
--- a/inc/lib/Twig/Profiler/Node/EnterProfile.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a profile enter node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Profiler_Node_EnterProfile extends Twig_Node
-{
-    public function __construct($extensionName, $type, $name, $varName)
-    {
-        parent::__construct(array(), array('extension_name' => $extensionName, 'name' => $name, 'type' => $type, 'var_name' => $varName));
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write(sprintf('$%s = $this->env->getExtension(', $this->getAttribute('var_name')))
-            ->repr($this->getAttribute('extension_name'))
-            ->raw(");\n")
-            ->write(sprintf('$%s->enter($%s = new Twig_Profiler_Profile($this->getTemplateName(), ', $this->getAttribute('var_name'), $this->getAttribute('var_name').'_prof'))
-            ->repr($this->getAttribute('type'))
-            ->raw(', ')
-            ->repr($this->getAttribute('name'))
-            ->raw("));\n\n")
-        ;
-    }
-}
-
-class_alias('Twig_Profiler_Node_EnterProfile', 'Twig\Profiler\Node\EnterProfileNode', false);
diff --git a/inc/lib/Twig/Profiler/Node/LeaveProfile.php b/inc/lib/Twig/Profiler/Node/LeaveProfile.php
deleted file mode 100644
index d1d6a7cc..00000000
--- a/inc/lib/Twig/Profiler/Node/LeaveProfile.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a profile leave node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Profiler_Node_LeaveProfile extends Twig_Node
-{
-    public function __construct($varName)
-    {
-        parent::__construct(array(), array('var_name' => $varName));
-    }
-
-    public function compile(Twig_Compiler $compiler)
-    {
-        $compiler
-            ->write("\n")
-            ->write(sprintf("\$%s->leave(\$%s);\n\n", $this->getAttribute('var_name'), $this->getAttribute('var_name').'_prof'))
-        ;
-    }
-}
-
-class_alias('Twig_Profiler_Node_LeaveProfile', 'Twig\Profiler\Node\LeaveProfileNode', false);
diff --git a/inc/lib/Twig/Profiler/NodeVisitor/Profiler.php b/inc/lib/Twig/Profiler/NodeVisitor/Profiler.php
deleted file mode 100644
index 5db41fea..00000000
--- a/inc/lib/Twig/Profiler/NodeVisitor/Profiler.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Profiler_NodeVisitor_Profiler extends Twig_BaseNodeVisitor
-{
-    private $extensionName;
-
-    public function __construct($extensionName)
-    {
-        $this->extensionName = $extensionName;
-    }
-
-    protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
-    {
-        return $node;
-    }
-
-    protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
-    {
-        if ($node instanceof Twig_Node_Module) {
-            $varName = $this->getVarName();
-            $node->setNode('display_start', new Twig_Node(array(new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::TEMPLATE, $node->getTemplateName(), $varName), $node->getNode('display_start'))));
-            $node->setNode('display_end', new Twig_Node(array(new Twig_Profiler_Node_LeaveProfile($varName), $node->getNode('display_end'))));
-        } elseif ($node instanceof Twig_Node_Block) {
-            $varName = $this->getVarName();
-            $node->setNode('body', new Twig_Node_Body(array(
-                new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::BLOCK, $node->getAttribute('name'), $varName),
-                $node->getNode('body'),
-                new Twig_Profiler_Node_LeaveProfile($varName),
-            )));
-        } elseif ($node instanceof Twig_Node_Macro) {
-            $varName = $this->getVarName();
-            $node->setNode('body', new Twig_Node_Body(array(
-                new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::MACRO, $node->getAttribute('name'), $varName),
-                $node->getNode('body'),
-                new Twig_Profiler_Node_LeaveProfile($varName),
-            )));
-        }
-
-        return $node;
-    }
-
-    private function getVarName()
-    {
-        return sprintf('__internal_%s', hash('sha256', $this->extensionName));
-    }
-
-    public function getPriority()
-    {
-        return 0;
-    }
-}
-
-class_alias('Twig_Profiler_NodeVisitor_Profiler', 'Twig\Profiler\NodeVisitor\ProfilerNodeVisitor', false);
diff --git a/inc/lib/Twig/Profiler/Profile.php b/inc/lib/Twig/Profiler/Profile.php
deleted file mode 100644
index 3fdc1a8a..00000000
--- a/inc/lib/Twig/Profiler/Profile.php
+++ /dev/null
@@ -1,170 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Profiler_Profile implements IteratorAggregate, Serializable
-{
-    const ROOT = 'ROOT';
-    const BLOCK = 'block';
-    const TEMPLATE = 'template';
-    const MACRO = 'macro';
-
-    private $template;
-    private $name;
-    private $type;
-    private $starts = array();
-    private $ends = array();
-    private $profiles = array();
-
-    public function __construct($template = 'main', $type = self::ROOT, $name = 'main')
-    {
-        $this->template = $template;
-        $this->type = $type;
-        $this->name = 0 === strpos($name, '__internal_') ? 'INTERNAL' : $name;
-        $this->enter();
-    }
-
-    public function getTemplate()
-    {
-        return $this->template;
-    }
-
-    public function getType()
-    {
-        return $this->type;
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    public function isRoot()
-    {
-        return self::ROOT === $this->type;
-    }
-
-    public function isTemplate()
-    {
-        return self::TEMPLATE === $this->type;
-    }
-
-    public function isBlock()
-    {
-        return self::BLOCK === $this->type;
-    }
-
-    public function isMacro()
-    {
-        return self::MACRO === $this->type;
-    }
-
-    public function getProfiles()
-    {
-        return $this->profiles;
-    }
-
-    public function addProfile(Twig_Profiler_Profile $profile)
-    {
-        $this->profiles[] = $profile;
-    }
-
-    /**
-     * Returns the duration in microseconds.
-     *
-     * @return int
-     */
-    public function getDuration()
-    {
-        if ($this->isRoot() && $this->profiles) {
-            // for the root node with children, duration is the sum of all child durations
-            $duration = 0;
-            foreach ($this->profiles as $profile) {
-                $duration += $profile->getDuration();
-            }
-
-            return $duration;
-        }
-
-        return isset($this->ends['wt']) && isset($this->starts['wt']) ? $this->ends['wt'] - $this->starts['wt'] : 0;
-    }
-
-    /**
-     * Returns the memory usage in bytes.
-     *
-     * @return int
-     */
-    public function getMemoryUsage()
-    {
-        return isset($this->ends['mu']) && isset($this->starts['mu']) ? $this->ends['mu'] - $this->starts['mu'] : 0;
-    }
-
-    /**
-     * Returns the peak memory usage in bytes.
-     *
-     * @return int
-     */
-    public function getPeakMemoryUsage()
-    {
-        return isset($this->ends['pmu']) && isset($this->starts['pmu']) ? $this->ends['pmu'] - $this->starts['pmu'] : 0;
-    }
-
-    /**
-     * Starts the profiling.
-     */
-    public function enter()
-    {
-        $this->starts = array(
-            'wt' => microtime(true),
-            'mu' => memory_get_usage(),
-            'pmu' => memory_get_peak_usage(),
-        );
-    }
-
-    /**
-     * Stops the profiling.
-     */
-    public function leave()
-    {
-        $this->ends = array(
-            'wt' => microtime(true),
-            'mu' => memory_get_usage(),
-            'pmu' => memory_get_peak_usage(),
-        );
-    }
-
-    public function reset()
-    {
-        $this->starts = $this->ends = $this->profiles = array();
-        $this->enter();
-    }
-
-    public function getIterator()
-    {
-        return new ArrayIterator($this->profiles);
-    }
-
-    public function serialize()
-    {
-        return serialize(array($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles));
-    }
-
-    public function unserialize($data)
-    {
-        list($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles) = unserialize($data);
-    }
-}
-
-class_alias('Twig_Profiler_Profile', 'Twig\Profiler\Profile', false);
diff --git a/inc/lib/Twig/RuntimeLoaderInterface.php b/inc/lib/Twig/RuntimeLoaderInterface.php
deleted file mode 100644
index f5eb14e0..00000000
--- a/inc/lib/Twig/RuntimeLoaderInterface.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Creates runtime implementations for Twig elements (filters/functions/tests).
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_RuntimeLoaderInterface
-{
-    /**
-     * Creates the runtime implementation of a Twig element (filter/function/test).
-     *
-     * @param string $class A runtime class
-     *
-     * @return object|null The runtime instance or null if the loader does not know how to create the runtime for this class
-     */
-    public function load($class);
-}
-
-class_alias('Twig_RuntimeLoaderInterface', 'Twig\RuntimeLoader\RuntimeLoaderInterface', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityError.php b/inc/lib/Twig/Sandbox/SecurityError.php
deleted file mode 100644
index b6707e38..00000000
--- a/inc/lib/Twig/Sandbox/SecurityError.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a security error occurs at runtime.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Sandbox_SecurityError extends Twig_Error
-{
-}
-
-class_alias('Twig_Sandbox_SecurityError', 'Twig\Sandbox\SecurityError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityNotAllowedFilterError.php b/inc/lib/Twig/Sandbox/SecurityNotAllowedFilterError.php
deleted file mode 100644
index 0ba33276..00000000
--- a/inc/lib/Twig/Sandbox/SecurityNotAllowedFilterError.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a not allowed filter is used in a template.
- *
- * @author Martin Hasoň <martin.hason@gmail.com>
- */
-class Twig_Sandbox_SecurityNotAllowedFilterError extends Twig_Sandbox_SecurityError
-{
-    private $filterName;
-
-    public function __construct($message, $functionName, $lineno = -1, $filename = null, Exception $previous = null)
-    {
-        parent::__construct($message, $lineno, $filename, $previous);
-        $this->filterName = $functionName;
-    }
-
-    public function getFilterName()
-    {
-        return $this->filterName;
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityNotAllowedFilterError', 'Twig\Sandbox\SecurityNotAllowedFilterError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityNotAllowedFunctionError.php b/inc/lib/Twig/Sandbox/SecurityNotAllowedFunctionError.php
deleted file mode 100644
index aa391429..00000000
--- a/inc/lib/Twig/Sandbox/SecurityNotAllowedFunctionError.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a not allowed function is used in a template.
- *
- * @author Martin Hasoň <martin.hason@gmail.com>
- */
-class Twig_Sandbox_SecurityNotAllowedFunctionError extends Twig_Sandbox_SecurityError
-{
-    private $functionName;
-
-    public function __construct($message, $functionName, $lineno = -1, $filename = null, Exception $previous = null)
-    {
-        parent::__construct($message, $lineno, $filename, $previous);
-        $this->functionName = $functionName;
-    }
-
-    public function getFunctionName()
-    {
-        return $this->functionName;
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityNotAllowedFunctionError', 'Twig\Sandbox\SecurityNotAllowedFunctionError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityNotAllowedMethodError.php b/inc/lib/Twig/Sandbox/SecurityNotAllowedMethodError.php
deleted file mode 100644
index 93012fe9..00000000
--- a/inc/lib/Twig/Sandbox/SecurityNotAllowedMethodError.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a not allowed class method is used in a template.
- *
- * @author Kit Burton-Senior <mail@kitbs.com>
- */
-class Twig_Sandbox_SecurityNotAllowedMethodError extends Twig_Sandbox_SecurityError
-{
-    private $className;
-    private $methodName;
-
-    public function __construct($message, $className, $methodName, $lineno = -1, $filename = null, Exception $previous = null)
-    {
-        parent::__construct($message, $lineno, $filename, $previous);
-        $this->className = $className;
-        $this->methodName = $methodName;
-    }
-
-    public function getClassName()
-    {
-        return $this->className;
-    }
-
-    public function getMethodName()
-    {
-        return $this->methodName;
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityNotAllowedMethodError', 'Twig\Sandbox\SecurityNotAllowedMethodError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityNotAllowedPropertyError.php b/inc/lib/Twig/Sandbox/SecurityNotAllowedPropertyError.php
deleted file mode 100644
index f27969c1..00000000
--- a/inc/lib/Twig/Sandbox/SecurityNotAllowedPropertyError.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a not allowed class property is used in a template.
- *
- * @author Kit Burton-Senior <mail@kitbs.com>
- */
-class Twig_Sandbox_SecurityNotAllowedPropertyError extends Twig_Sandbox_SecurityError
-{
-    private $className;
-    private $propertyName;
-
-    public function __construct($message, $className, $propertyName, $lineno = -1, $filename = null, Exception $previous = null)
-    {
-        parent::__construct($message, $lineno, $filename, $previous);
-        $this->className = $className;
-        $this->propertyName = $propertyName;
-    }
-
-    public function getClassName()
-    {
-        return $this->className;
-    }
-
-    public function getPropertyName()
-    {
-        return $this->propertyName;
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityNotAllowedPropertyError', 'Twig\Sandbox\SecurityNotAllowedPropertyError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityNotAllowedTagError.php b/inc/lib/Twig/Sandbox/SecurityNotAllowedTagError.php
deleted file mode 100644
index 4bbd2238..00000000
--- a/inc/lib/Twig/Sandbox/SecurityNotAllowedTagError.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exception thrown when a not allowed tag is used in a template.
- *
- * @author Martin Hasoň <martin.hason@gmail.com>
- */
-class Twig_Sandbox_SecurityNotAllowedTagError extends Twig_Sandbox_SecurityError
-{
-    private $tagName;
-
-    public function __construct($message, $tagName, $lineno = -1, $filename = null, Exception $previous = null)
-    {
-        parent::__construct($message, $lineno, $filename, $previous);
-        $this->tagName = $tagName;
-    }
-
-    public function getTagName()
-    {
-        return $this->tagName;
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityNotAllowedTagError', 'Twig\Sandbox\SecurityNotAllowedTagError', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityPolicy.php b/inc/lib/Twig/Sandbox/SecurityPolicy.php
deleted file mode 100644
index dca0b82b..00000000
--- a/inc/lib/Twig/Sandbox/SecurityPolicy.php
+++ /dev/null
@@ -1,125 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a security policy which need to be enforced when sandbox mode is enabled.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Sandbox_SecurityPolicy implements Twig_Sandbox_SecurityPolicyInterface
-{
-    protected $allowedTags;
-    protected $allowedFilters;
-    protected $allowedMethods;
-    protected $allowedProperties;
-    protected $allowedFunctions;
-
-    public function __construct(array $allowedTags = array(), array $allowedFilters = array(), array $allowedMethods = array(), array $allowedProperties = array(), array $allowedFunctions = array())
-    {
-        $this->allowedTags = $allowedTags;
-        $this->allowedFilters = $allowedFilters;
-        $this->setAllowedMethods($allowedMethods);
-        $this->allowedProperties = $allowedProperties;
-        $this->allowedFunctions = $allowedFunctions;
-    }
-
-    public function setAllowedTags(array $tags)
-    {
-        $this->allowedTags = $tags;
-    }
-
-    public function setAllowedFilters(array $filters)
-    {
-        $this->allowedFilters = $filters;
-    }
-
-    public function setAllowedMethods(array $methods)
-    {
-        $this->allowedMethods = array();
-        foreach ($methods as $class => $m) {
-            $this->allowedMethods[$class] = array_map('strtolower', is_array($m) ? $m : array($m));
-        }
-    }
-
-    public function setAllowedProperties(array $properties)
-    {
-        $this->allowedProperties = $properties;
-    }
-
-    public function setAllowedFunctions(array $functions)
-    {
-        $this->allowedFunctions = $functions;
-    }
-
-    public function checkSecurity($tags, $filters, $functions)
-    {
-        foreach ($tags as $tag) {
-            if (!in_array($tag, $this->allowedTags)) {
-                throw new Twig_Sandbox_SecurityNotAllowedTagError(sprintf('Tag "%s" is not allowed.', $tag), $tag);
-            }
-        }
-
-        foreach ($filters as $filter) {
-            if (!in_array($filter, $this->allowedFilters)) {
-                throw new Twig_Sandbox_SecurityNotAllowedFilterError(sprintf('Filter "%s" is not allowed.', $filter), $filter);
-            }
-        }
-
-        foreach ($functions as $function) {
-            if (!in_array($function, $this->allowedFunctions)) {
-                throw new Twig_Sandbox_SecurityNotAllowedFunctionError(sprintf('Function "%s" is not allowed.', $function), $function);
-            }
-        }
-    }
-
-    public function checkMethodAllowed($obj, $method)
-    {
-        if ($obj instanceof Twig_TemplateInterface || $obj instanceof Twig_Markup) {
-            return true;
-        }
-
-        $allowed = false;
-        $method = strtolower($method);
-        foreach ($this->allowedMethods as $class => $methods) {
-            if ($obj instanceof $class) {
-                $allowed = in_array($method, $methods);
-
-                break;
-            }
-        }
-
-        if (!$allowed) {
-            $class = get_class($obj);
-            throw new Twig_Sandbox_SecurityNotAllowedMethodError(sprintf('Calling "%s" method on a "%s" object is not allowed.', $method, $class), $class, $method);
-        }
-    }
-
-    public function checkPropertyAllowed($obj, $property)
-    {
-        $allowed = false;
-        foreach ($this->allowedProperties as $class => $properties) {
-            if ($obj instanceof $class) {
-                $allowed = in_array($property, is_array($properties) ? $properties : array($properties));
-
-                break;
-            }
-        }
-
-        if (!$allowed) {
-            $class = get_class($obj);
-            throw new Twig_Sandbox_SecurityNotAllowedPropertyError(sprintf('Calling "%s" property on a "%s" object is not allowed.', $property, $class), $class, $property);
-        }
-    }
-}
-
-class_alias('Twig_Sandbox_SecurityPolicy', 'Twig\Sandbox\SecurityPolicy', false);
diff --git a/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php b/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php
deleted file mode 100644
index 88f64447..00000000
--- a/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interfaces that all security policy classes must implements.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_Sandbox_SecurityPolicyInterface
-{
-    public function checkSecurity($tags, $filters, $functions);
-
-    public function checkMethodAllowed($obj, $method);
-
-    public function checkPropertyAllowed($obj, $method);
-}
-
-class_alias('Twig_Sandbox_SecurityPolicyInterface', 'Twig\Sandbox\SecurityPolicyInterface', false);
diff --git a/inc/lib/Twig/SimpleFilter.php b/inc/lib/Twig/SimpleFilter.php
deleted file mode 100644
index ee4c0aeb..00000000
--- a/inc/lib/Twig/SimpleFilter.php
+++ /dev/null
@@ -1,121 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template filter.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_SimpleFilter
-{
-    protected $name;
-    protected $callable;
-    protected $options;
-    protected $arguments = array();
-
-    public function __construct($name, $callable, array $options = array())
-    {
-        $this->name = $name;
-        $this->callable = $callable;
-        $this->options = array_merge(array(
-            'needs_environment' => false,
-            'needs_context' => false,
-            'is_variadic' => false,
-            'is_safe' => null,
-            'is_safe_callback' => null,
-            'pre_escape' => null,
-            'preserves_safety' => null,
-            'node_class' => 'Twig_Node_Expression_Filter',
-            'deprecated' => false,
-            'alternative' => null,
-        ), $options);
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    public function getCallable()
-    {
-        return $this->callable;
-    }
-
-    public function getNodeClass()
-    {
-        return $this->options['node_class'];
-    }
-
-    public function setArguments($arguments)
-    {
-        $this->arguments = $arguments;
-    }
-
-    public function getArguments()
-    {
-        return $this->arguments;
-    }
-
-    public function needsEnvironment()
-    {
-        return $this->options['needs_environment'];
-    }
-
-    public function needsContext()
-    {
-        return $this->options['needs_context'];
-    }
-
-    public function getSafe(Twig_Node $filterArgs)
-    {
-        if (null !== $this->options['is_safe']) {
-            return $this->options['is_safe'];
-        }
-
-        if (null !== $this->options['is_safe_callback']) {
-            return call_user_func($this->options['is_safe_callback'], $filterArgs);
-        }
-    }
-
-    public function getPreservesSafety()
-    {
-        return $this->options['preserves_safety'];
-    }
-
-    public function getPreEscape()
-    {
-        return $this->options['pre_escape'];
-    }
-
-    public function isVariadic()
-    {
-        return $this->options['is_variadic'];
-    }
-
-    public function isDeprecated()
-    {
-        return (bool) $this->options['deprecated'];
-    }
-
-    public function getDeprecatedVersion()
-    {
-        return $this->options['deprecated'];
-    }
-
-    public function getAlternative()
-    {
-        return $this->options['alternative'];
-    }
-}
-
-class_alias('Twig_SimpleFilter', 'Twig\TwigFilter', false);
diff --git a/inc/lib/Twig/SimpleFunction.php b/inc/lib/Twig/SimpleFunction.php
deleted file mode 100644
index a6aa7ca7..00000000
--- a/inc/lib/Twig/SimpleFunction.php
+++ /dev/null
@@ -1,111 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template function.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_SimpleFunction
-{
-    protected $name;
-    protected $callable;
-    protected $options;
-    protected $arguments = array();
-
-    public function __construct($name, $callable, array $options = array())
-    {
-        $this->name = $name;
-        $this->callable = $callable;
-        $this->options = array_merge(array(
-            'needs_environment' => false,
-            'needs_context' => false,
-            'is_variadic' => false,
-            'is_safe' => null,
-            'is_safe_callback' => null,
-            'node_class' => 'Twig_Node_Expression_Function',
-            'deprecated' => false,
-            'alternative' => null,
-        ), $options);
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    public function getCallable()
-    {
-        return $this->callable;
-    }
-
-    public function getNodeClass()
-    {
-        return $this->options['node_class'];
-    }
-
-    public function setArguments($arguments)
-    {
-        $this->arguments = $arguments;
-    }
-
-    public function getArguments()
-    {
-        return $this->arguments;
-    }
-
-    public function needsEnvironment()
-    {
-        return $this->options['needs_environment'];
-    }
-
-    public function needsContext()
-    {
-        return $this->options['needs_context'];
-    }
-
-    public function getSafe(Twig_Node $functionArgs)
-    {
-        if (null !== $this->options['is_safe']) {
-            return $this->options['is_safe'];
-        }
-
-        if (null !== $this->options['is_safe_callback']) {
-            return call_user_func($this->options['is_safe_callback'], $functionArgs);
-        }
-
-        return array();
-    }
-
-    public function isVariadic()
-    {
-        return $this->options['is_variadic'];
-    }
-
-    public function isDeprecated()
-    {
-        return (bool) $this->options['deprecated'];
-    }
-
-    public function getDeprecatedVersion()
-    {
-        return $this->options['deprecated'];
-    }
-
-    public function getAlternative()
-    {
-        return $this->options['alternative'];
-    }
-}
-
-class_alias('Twig_SimpleFunction', 'Twig\TwigFunction', false);
diff --git a/inc/lib/Twig/SimpleTest.php b/inc/lib/Twig/SimpleTest.php
deleted file mode 100644
index fee5778b..00000000
--- a/inc/lib/Twig/SimpleTest.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template test.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_SimpleTest
-{
-    protected $name;
-    protected $callable;
-    protected $options;
-
-    public function __construct($name, $callable, array $options = array())
-    {
-        $this->name = $name;
-        $this->callable = $callable;
-        $this->options = array_merge(array(
-            'is_variadic' => false,
-            'node_class' => 'Twig_Node_Expression_Test',
-            'deprecated' => false,
-            'alternative' => null,
-        ), $options);
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    public function getCallable()
-    {
-        return $this->callable;
-    }
-
-    public function getNodeClass()
-    {
-        return $this->options['node_class'];
-    }
-
-    public function isVariadic()
-    {
-        return $this->options['is_variadic'];
-    }
-
-    public function isDeprecated()
-    {
-        return (bool) $this->options['deprecated'];
-    }
-
-    public function getDeprecatedVersion()
-    {
-        return $this->options['deprecated'];
-    }
-
-    public function getAlternative()
-    {
-        return $this->options['alternative'];
-    }
-}
-
-class_alias('Twig_SimpleTest', 'Twig\TwigTest', false);
diff --git a/inc/lib/Twig/Source.php b/inc/lib/Twig/Source.php
deleted file mode 100644
index bd8d869f..00000000
--- a/inc/lib/Twig/Source.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Holds information about a non-compiled Twig template.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Source
-{
-    private $code;
-    private $name;
-    private $path;
-
-    /**
-     * @param string $code The template source code
-     * @param string $name The template logical name
-     * @param string $path The filesystem path of the template if any
-     */
-    public function __construct($code, $name, $path = '')
-    {
-        $this->code = $code;
-        $this->name = $name;
-        $this->path = $path;
-    }
-
-    public function getCode()
-    {
-        return $this->code;
-    }
-
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    public function getPath()
-    {
-        return $this->path;
-    }
-}
-
-class_alias('Twig_Source', 'Twig\Source', false);
diff --git a/inc/lib/Twig/SourceContextLoaderInterface.php b/inc/lib/Twig/SourceContextLoaderInterface.php
deleted file mode 100644
index a6e8c425..00000000
--- a/inc/lib/Twig/SourceContextLoaderInterface.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Adds a getSourceContext() method for loaders.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.27 (to be removed in 3.0)
- */
-interface Twig_SourceContextLoaderInterface
-{
-    /**
-     * Returns the source context for a given template logical name.
-     *
-     * @param string $name The template logical name
-     *
-     * @return Twig_Source
-     *
-     * @throws Twig_Error_Loader When $name is not found
-     */
-    public function getSourceContext($name);
-}
-
-class_alias('Twig_SourceContextLoaderInterface', 'Twig\Loader\SourceContextLoaderInterface', false);
diff --git a/inc/lib/Twig/Template.php b/inc/lib/Twig/Template.php
deleted file mode 100644
index 3709232a..00000000
--- a/inc/lib/Twig/Template.php
+++ /dev/null
@@ -1,708 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Default base class for compiled templates.
- *
- * This class is an implementation detail of how template compilation currently
- * works, which might change. It should never be used directly. Use $twig->load()
- * instead, which returns an instance of Twig_TemplateWrapper.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @internal
- */
-abstract class Twig_Template implements Twig_TemplateInterface
-{
-    /**
-     * @internal
-     */
-    protected static $cache = array();
-
-    protected $parent;
-    protected $parents = array();
-    protected $env;
-    protected $blocks = array();
-    protected $traits = array();
-
-    public function __construct(Twig_Environment $env)
-    {
-        $this->env = $env;
-    }
-
-    /**
-     * @internal this method will be removed in 2.0 and is only used internally to provide an upgrade path from 1.x to 2.0
-     */
-    public function __toString()
-    {
-        return $this->getTemplateName();
-    }
-
-    /**
-     * Returns the template name.
-     *
-     * @return string The template name
-     */
-    abstract public function getTemplateName();
-
-    /**
-     * Returns debug information about the template.
-     *
-     * @return array Debug information
-     *
-     * @internal
-     */
-    public function getDebugInfo()
-    {
-        return array();
-    }
-
-    /**
-     * Returns the template source code.
-     *
-     * @return string The template source code
-     *
-     * @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead
-     */
-    public function getSource()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED);
-
-        return '';
-    }
-
-    /**
-     * Returns information about the original template source code.
-     *
-     * @return Twig_Source
-     */
-    public function getSourceContext()
-    {
-        return new Twig_Source('', $this->getTemplateName());
-    }
-
-    /**
-     * @deprecated since 1.20 (to be removed in 2.0)
-     */
-    public function getEnvironment()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.20 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-        return $this->env;
-    }
-
-    /**
-     * Returns the parent template.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param array $context
-     *
-     * @return Twig_TemplateInterface|false The parent template or false if there is no parent
-     *
-     * @internal
-     */
-    public function getParent(array $context)
-    {
-        if (null !== $this->parent) {
-            return $this->parent;
-        }
-
-        try {
-            $parent = $this->doGetParent($context);
-
-            if (false === $parent) {
-                return false;
-            }
-
-            if ($parent instanceof self) {
-                return $this->parents[$parent->getTemplateName()] = $parent;
-            }
-
-            if (!isset($this->parents[$parent])) {
-                $this->parents[$parent] = $this->loadTemplate($parent);
-            }
-        } catch (Twig_Error_Loader $e) {
-            $e->setSourceContext(null);
-            $e->guess();
-
-            throw $e;
-        }
-
-        return $this->parents[$parent];
-    }
-
-    protected function doGetParent(array $context)
-    {
-        return false;
-    }
-
-    public function isTraitable()
-    {
-        return true;
-    }
-
-    /**
-     * Displays a parent block.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param string $name    The block name to display from the parent
-     * @param array  $context The context
-     * @param array  $blocks  The current set of blocks
-     *
-     * @internal
-     */
-    public function displayParentBlock($name, array $context, array $blocks = array())
-    {
-        $name = (string) $name;
-
-        if (isset($this->traits[$name])) {
-            $this->traits[$name][0]->displayBlock($name, $context, $blocks, false);
-        } elseif (false !== $parent = $this->getParent($context)) {
-            $parent->displayBlock($name, $context, $blocks, false);
-        } else {
-            throw new Twig_Error_Runtime(sprintf('The template has no parent and no traits defining the "%s" block.', $name), -1, $this->getSourceContext());
-        }
-    }
-
-    /**
-     * Displays a block.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param string $name      The block name to display
-     * @param array  $context   The context
-     * @param array  $blocks    The current set of blocks
-     * @param bool   $useBlocks Whether to use the current set of blocks
-     *
-     * @internal
-     */
-    public function displayBlock($name, array $context, array $blocks = array(), $useBlocks = true)
-    {
-        $name = (string) $name;
-
-        if ($useBlocks && isset($blocks[$name])) {
-            $template = $blocks[$name][0];
-            $block = $blocks[$name][1];
-        } elseif (isset($this->blocks[$name])) {
-            $template = $this->blocks[$name][0];
-            $block = $this->blocks[$name][1];
-        } else {
-            $template = null;
-            $block = null;
-        }
-
-        // avoid RCEs when sandbox is enabled
-        if (null !== $template && !$template instanceof self) {
-            throw new LogicException('A block must be a method on a Twig_Template instance.');
-        }
-
-        if (null !== $template) {
-            try {
-                $template->$block($context, $blocks);
-            } catch (Twig_Error $e) {
-                if (!$e->getSourceContext()) {
-                    $e->setSourceContext($template->getSourceContext());
-                }
-
-                // this is mostly useful for Twig_Error_Loader exceptions
-                // see Twig_Error_Loader
-                if (false === $e->getTemplateLine()) {
-                    $e->setTemplateLine(-1);
-                    $e->guess();
-                }
-
-                throw $e;
-            } catch (Exception $e) {
-                throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $template->getSourceContext(), $e);
-            }
-        } elseif (false !== $parent = $this->getParent($context)) {
-            $parent->displayBlock($name, $context, array_merge($this->blocks, $blocks), false);
-        } else {
-            @trigger_error(sprintf('Silent display of undefined block "%s" in template "%s" is deprecated since version 1.29 and will throw an exception in 2.0. Use the "block(\'%s\') is defined" expression to test for block existence.', $name, $this->getTemplateName(), $name), E_USER_DEPRECATED);
-        }
-    }
-
-    /**
-     * Renders a parent block.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param string $name    The block name to render from the parent
-     * @param array  $context The context
-     * @param array  $blocks  The current set of blocks
-     *
-     * @return string The rendered block
-     *
-     * @internal
-     */
-    public function renderParentBlock($name, array $context, array $blocks = array())
-    {
-        ob_start();
-        $this->displayParentBlock($name, $context, $blocks);
-
-        return ob_get_clean();
-    }
-
-    /**
-     * Renders a block.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @param string $name      The block name to render
-     * @param array  $context   The context
-     * @param array  $blocks    The current set of blocks
-     * @param bool   $useBlocks Whether to use the current set of blocks
-     *
-     * @return string The rendered block
-     *
-     * @internal
-     */
-    public function renderBlock($name, array $context, array $blocks = array(), $useBlocks = true)
-    {
-        ob_start();
-        $this->displayBlock($name, $context, $blocks, $useBlocks);
-
-        return ob_get_clean();
-    }
-
-    /**
-     * Returns whether a block exists or not in the current context of the template.
-     *
-     * This method checks blocks defined in the current template
-     * or defined in "used" traits or defined in parent templates.
-     *
-     * @param string $name    The block name
-     * @param array  $context The context
-     * @param array  $blocks  The current set of blocks
-     *
-     * @return bool true if the block exists, false otherwise
-     *
-     * @internal
-     */
-    public function hasBlock($name, array $context = null, array $blocks = array())
-    {
-        if (null === $context) {
-            @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED);
-
-            return isset($this->blocks[(string) $name]);
-        }
-
-        if (isset($blocks[$name])) {
-            return $blocks[$name][0] instanceof self;
-        }
-
-        if (isset($this->blocks[$name])) {
-            return true;
-        }
-
-        if (false !== $parent = $this->getParent($context)) {
-            return $parent->hasBlock($name, $context);
-        }
-
-        return false;
-    }
-
-    /**
-     * Returns all block names in the current context of the template.
-     *
-     * This method checks blocks defined in the current template
-     * or defined in "used" traits or defined in parent templates.
-     *
-     * @param array $context The context
-     * @param array $blocks  The current set of blocks
-     *
-     * @return array An array of block names
-     *
-     * @internal
-     */
-    public function getBlockNames(array $context = null, array $blocks = array())
-    {
-        if (null === $context) {
-            @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED);
-
-            return array_keys($this->blocks);
-        }
-
-        $names = array_merge(array_keys($blocks), array_keys($this->blocks));
-
-        if (false !== $parent = $this->getParent($context)) {
-            $names = array_merge($names, $parent->getBlockNames($context));
-        }
-
-        return array_unique($names);
-    }
-
-    protected function loadTemplate($template, $templateName = null, $line = null, $index = null)
-    {
-        try {
-            if (is_array($template)) {
-                return $this->env->resolveTemplate($template);
-            }
-
-            if ($template instanceof self) {
-                return $template;
-            }
-
-            if ($template instanceof Twig_TemplateWrapper) {
-                return $template;
-            }
-
-            return $this->env->loadTemplate($template, $index);
-        } catch (Twig_Error $e) {
-            if (!$e->getSourceContext()) {
-                $e->setSourceContext($templateName ? new Twig_Source('', $templateName) : $this->getSourceContext());
-            }
-
-            if ($e->getTemplateLine()) {
-                throw $e;
-            }
-
-            if (!$line) {
-                $e->guess();
-            } else {
-                $e->setTemplateLine($line);
-            }
-
-            throw $e;
-        }
-    }
-
-    /**
-     * Returns all blocks.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * @return array An array of blocks
-     *
-     * @internal
-     */
-    public function getBlocks()
-    {
-        return $this->blocks;
-    }
-
-    public function display(array $context, array $blocks = array())
-    {
-        $this->displayWithErrorHandling($this->env->mergeGlobals($context), array_merge($this->blocks, $blocks));
-    }
-
-    public function render(array $context)
-    {
-        $level = ob_get_level();
-        ob_start();
-        try {
-            $this->display($context);
-        } catch (Exception $e) {
-            while (ob_get_level() > $level) {
-                ob_end_clean();
-            }
-
-            throw $e;
-        } catch (Throwable $e) {
-            while (ob_get_level() > $level) {
-                ob_end_clean();
-            }
-
-            throw $e;
-        }
-
-        return ob_get_clean();
-    }
-
-    protected function displayWithErrorHandling(array $context, array $blocks = array())
-    {
-        try {
-            $this->doDisplay($context, $blocks);
-        } catch (Twig_Error $e) {
-            if (!$e->getSourceContext()) {
-                $e->setSourceContext($this->getSourceContext());
-            }
-
-            // this is mostly useful for Twig_Error_Loader exceptions
-            // see Twig_Error_Loader
-            if (false === $e->getTemplateLine()) {
-                $e->setTemplateLine(-1);
-                $e->guess();
-            }
-
-            throw $e;
-        } catch (Exception $e) {
-            throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $this->getSourceContext(), $e);
-        }
-    }
-
-    /**
-     * Auto-generated method to display the template with the given context.
-     *
-     * @param array $context An array of parameters to pass to the template
-     * @param array $blocks  An array of blocks to pass to the template
-     */
-    abstract protected function doDisplay(array $context, array $blocks = array());
-
-    /**
-     * Returns a variable from the context.
-     *
-     * This method is for internal use only and should never be called
-     * directly.
-     *
-     * This method should not be overridden in a sub-class as this is an
-     * implementation detail that has been introduced to optimize variable
-     * access for versions of PHP before 5.4. This is not a way to override
-     * the way to get a variable value.
-     *
-     * @param array  $context           The context
-     * @param string $item              The variable to return from the context
-     * @param bool   $ignoreStrictCheck Whether to ignore the strict variable check or not
-     *
-     * @return mixed The content of the context variable
-     *
-     * @throws Twig_Error_Runtime if the variable does not exist and Twig is running in strict mode
-     *
-     * @internal
-     */
-    final protected function getContext($context, $item, $ignoreStrictCheck = false)
-    {
-        if (!array_key_exists($item, $context)) {
-            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
-                return;
-            }
-
-            throw new Twig_Error_Runtime(sprintf('Variable "%s" does not exist.', $item), -1, $this->getSourceContext());
-        }
-
-        return $context[$item];
-    }
-
-    /**
-     * Returns the attribute value for a given array/object.
-     *
-     * @param mixed  $object            The object or array from where to get the item
-     * @param mixed  $item              The item to get from the array or object
-     * @param array  $arguments         An array of arguments to pass if the item is an object method
-     * @param string $type              The type of attribute (@see Twig_Template constants)
-     * @param bool   $isDefinedTest     Whether this is only a defined check
-     * @param bool   $ignoreStrictCheck Whether to ignore the strict attribute check or not
-     *
-     * @return mixed The attribute value, or a Boolean when $isDefinedTest is true, or null when the attribute is not set and $ignoreStrictCheck is true
-     *
-     * @throws Twig_Error_Runtime if the attribute does not exist and Twig is running in strict mode and $isDefinedTest is false
-     *
-     * @internal
-     */
-    protected function getAttribute($object, $item, array $arguments = array(), $type = self::ANY_CALL, $isDefinedTest = false, $ignoreStrictCheck = false)
-    {
-        // array
-        if (self::METHOD_CALL !== $type) {
-            $arrayItem = is_bool($item) || is_float($item) ? (int) $item : $item;
-
-            if ((is_array($object) && (isset($object[$arrayItem]) || array_key_exists($arrayItem, $object)))
-                || ($object instanceof ArrayAccess && isset($object[$arrayItem]))
-            ) {
-                if ($isDefinedTest) {
-                    return true;
-                }
-
-                return $object[$arrayItem];
-            }
-
-            if (self::ARRAY_CALL === $type || !is_object($object)) {
-                if ($isDefinedTest) {
-                    return false;
-                }
-
-                if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
-                    return;
-                }
-
-                if ($object instanceof ArrayAccess) {
-                    $message = sprintf('Key "%s" in object with ArrayAccess of class "%s" does not exist.', $arrayItem, get_class($object));
-                } elseif (is_object($object)) {
-                    $message = sprintf('Impossible to access a key "%s" on an object of class "%s" that does not implement ArrayAccess interface.', $item, get_class($object));
-                } elseif (is_array($object)) {
-                    if (empty($object)) {
-                        $message = sprintf('Key "%s" does not exist as the array is empty.', $arrayItem);
-                    } else {
-                        $message = sprintf('Key "%s" for array with keys "%s" does not exist.', $arrayItem, implode(', ', array_keys($object)));
-                    }
-                } elseif (self::ARRAY_CALL === $type) {
-                    if (null === $object) {
-                        $message = sprintf('Impossible to access a key ("%s") on a null variable.', $item);
-                    } else {
-                        $message = sprintf('Impossible to access a key ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
-                    }
-                } elseif (null === $object) {
-                    $message = sprintf('Impossible to access an attribute ("%s") on a null variable.', $item);
-                } else {
-                    $message = sprintf('Impossible to access an attribute ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
-                }
-
-                throw new Twig_Error_Runtime($message, -1, $this->getSourceContext());
-            }
-        }
-
-        if (!is_object($object)) {
-            if ($isDefinedTest) {
-                return false;
-            }
-
-            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
-                return;
-            }
-
-            if (null === $object) {
-                $message = sprintf('Impossible to invoke a method ("%s") on a null variable.', $item);
-            } elseif (is_array($object)) {
-                $message = sprintf('Impossible to invoke a method ("%s") on an array.', $item);
-            } else {
-                $message = sprintf('Impossible to invoke a method ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
-            }
-
-            throw new Twig_Error_Runtime($message, -1, $this->getSourceContext());
-        }
-
-        // object property
-        if (self::METHOD_CALL !== $type && !$object instanceof self) { // Twig_Template does not have public properties, and we don't want to allow access to internal ones
-            if (isset($object->$item) || array_key_exists((string) $item, $object)) {
-                if ($isDefinedTest) {
-                    return true;
-                }
-
-                if ($this->env->hasExtension('Twig_Extension_Sandbox')) {
-                    $this->env->getExtension('Twig_Extension_Sandbox')->checkPropertyAllowed($object, $item);
-                }
-
-                return $object->$item;
-            }
-        }
-
-        $class = get_class($object);
-
-        // object method
-        if (!isset(self::$cache[$class])) {
-            // get_class_methods returns all methods accessible in the scope, but we only want public ones to be accessible in templates
-            if ($object instanceof self) {
-                $ref = new ReflectionClass($class);
-                $methods = array();
-
-                foreach ($ref->getMethods(ReflectionMethod::IS_PUBLIC) as $refMethod) {
-                    // Accessing the environment from templates is forbidden to prevent untrusted changes to the environment
-                    if ('getenvironment' !== strtolower($refMethod->name)) {
-                        $methods[] = $refMethod->name;
-                    }
-                }
-            } else {
-                $methods = get_class_methods($object);
-            }
-            // sort values to have consistent behavior, so that "get" methods win precedence over "is" methods
-            sort($methods);
-
-            $cache = array();
-
-            foreach ($methods as $method) {
-                $cache[$method] = $method;
-                $cache[$lcName = strtolower($method)] = $method;
-
-                if ('g' === $lcName[0] && 0 === strpos($lcName, 'get')) {
-                    $name = substr($method, 3);
-                    $lcName = substr($lcName, 3);
-                } elseif ('i' === $lcName[0] && 0 === strpos($lcName, 'is')) {
-                    $name = substr($method, 2);
-                    $lcName = substr($lcName, 2);
-                } else {
-                    continue;
-                }
-
-                // skip get() and is() methods (in which case, $name is empty)
-                if ($name) {
-                    if (!isset($cache[$name])) {
-                        $cache[$name] = $method;
-                    }
-                    if (!isset($cache[$lcName])) {
-                        $cache[$lcName] = $method;
-                    }
-                }
-            }
-            self::$cache[$class] = $cache;
-        }
-
-        $call = false;
-        if (isset(self::$cache[$class][$item])) {
-            $method = self::$cache[$class][$item];
-        } elseif (isset(self::$cache[$class][$lcItem = strtolower($item)])) {
-            $method = self::$cache[$class][$lcItem];
-        } elseif (isset(self::$cache[$class]['__call'])) {
-            $method = $item;
-            $call = true;
-        } else {
-            if ($isDefinedTest) {
-                return false;
-            }
-
-            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
-                return;
-            }
-
-            throw new Twig_Error_Runtime(sprintf('Neither the property "%1$s" nor one of the methods "%1$s()", "get%1$s()"/"is%1$s()" or "__call()" exist and have public access in class "%2$s".', $item, $class), -1, $this->getSourceContext());
-        }
-
-        if ($isDefinedTest) {
-            return true;
-        }
-
-        if ($this->env->hasExtension('Twig_Extension_Sandbox')) {
-            $this->env->getExtension('Twig_Extension_Sandbox')->checkMethodAllowed($object, $method);
-        }
-
-        // Some objects throw exceptions when they have __call, and the method we try
-        // to call is not supported. If ignoreStrictCheck is true, we should return null.
-        try {
-            if (!$arguments) {
-                $ret = $object->$method();
-            } else {
-                $ret = call_user_func_array(array($object, $method), $arguments);
-            }
-        } catch (BadMethodCallException $e) {
-            if ($call && ($ignoreStrictCheck || !$this->env->isStrictVariables())) {
-                return;
-            }
-            throw $e;
-        }
-
-        // @deprecated in 1.28
-        if ($object instanceof Twig_TemplateInterface) {
-            $self = $object->getTemplateName() === $this->getTemplateName();
-            $message = sprintf('Calling "%s" on template "%s" from template "%s" is deprecated since version 1.28 and won\'t be supported anymore in 2.0.', $item, $object->getTemplateName(), $this->getTemplateName());
-            if ('renderBlock' === $method || 'displayBlock' === $method) {
-                $message .= sprintf(' Use block("%s"%s) instead).', $arguments[0], $self ? '' : ', template');
-            } elseif ('hasBlock' === $method) {
-                $message .= sprintf(' Use "block("%s"%s) is defined" instead).', $arguments[0], $self ? '' : ', template');
-            } elseif ('render' === $method || 'display' === $method) {
-                $message .= sprintf(' Use include("%s") instead).', $object->getTemplateName());
-            }
-            @trigger_error($message, E_USER_DEPRECATED);
-
-            return '' === $ret ? '' : new Twig_Markup($ret, $this->env->getCharset());
-        }
-
-        return $ret;
-    }
-}
-
-class_alias('Twig_Template', 'Twig\Template', false);
diff --git a/inc/lib/Twig/TemplateInterface.php b/inc/lib/Twig/TemplateInterface.php
deleted file mode 100644
index 457ef7d7..00000000
--- a/inc/lib/Twig/TemplateInterface.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by all compiled templates.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 3.0)
- */
-interface Twig_TemplateInterface
-{
-    const ANY_CALL = 'any';
-    const ARRAY_CALL = 'array';
-    const METHOD_CALL = 'method';
-
-    /**
-     * Renders the template with the given context and returns it as string.
-     *
-     * @param array $context An array of parameters to pass to the template
-     *
-     * @return string The rendered template
-     */
-    public function render(array $context);
-
-    /**
-     * Displays the template with the given context.
-     *
-     * @param array $context An array of parameters to pass to the template
-     * @param array $blocks  An array of blocks to pass to the template
-     */
-    public function display(array $context, array $blocks = array());
-
-    /**
-     * Returns the bound environment for this template.
-     *
-     * @return Twig_Environment
-     */
-    public function getEnvironment();
-}
diff --git a/inc/lib/Twig/TemplateWrapper.php b/inc/lib/Twig/TemplateWrapper.php
deleted file mode 100644
index 497f6e98..00000000
--- a/inc/lib/Twig/TemplateWrapper.php
+++ /dev/null
@@ -1,133 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Exposes a template to userland.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-final class Twig_TemplateWrapper
-{
-    private $env;
-    private $template;
-
-    /**
-     * This method is for internal use only and should never be called
-     * directly (use Twig_Environment::load() instead).
-     *
-     * @internal
-     */
-    public function __construct(Twig_Environment $env, Twig_Template $template)
-    {
-        $this->env = $env;
-        $this->template = $template;
-    }
-
-    /**
-     * Renders the template.
-     *
-     * @param array $context An array of parameters to pass to the template
-     *
-     * @return string The rendered template
-     */
-    public function render($context = array())
-    {
-        return $this->template->render($context);
-    }
-
-    /**
-     * Displays the template.
-     *
-     * @param array $context An array of parameters to pass to the template
-     */
-    public function display($context = array())
-    {
-        $this->template->display($context);
-    }
-
-    /**
-     * Checks if a block is defined.
-     *
-     * @param string $name    The block name
-     * @param array  $context An array of parameters to pass to the template
-     *
-     * @return bool
-     */
-    public function hasBlock($name, $context = array())
-    {
-        return $this->template->hasBlock($name, $context);
-    }
-
-    /**
-     * Returns defined block names in the template.
-     *
-     * @param array $context An array of parameters to pass to the template
-     *
-     * @return string[] An array of defined template block names
-     */
-    public function getBlockNames($context = array())
-    {
-        return $this->template->getBlockNames($context);
-    }
-
-    /**
-     * Renders a template block.
-     *
-     * @param string $name    The block name to render
-     * @param array  $context An array of parameters to pass to the template
-     *
-     * @return string The rendered block
-     */
-    public function renderBlock($name, $context = array())
-    {
-        $context = $this->env->mergeGlobals($context);
-        $level = ob_get_level();
-        ob_start();
-        try {
-            $this->template->displayBlock($name, $context);
-        } catch (Exception $e) {
-            while (ob_get_level() > $level) {
-                ob_end_clean();
-            }
-
-            throw $e;
-        } catch (Throwable $e) {
-            while (ob_get_level() > $level) {
-                ob_end_clean();
-            }
-
-            throw $e;
-        }
-
-        return ob_get_clean();
-    }
-
-    /**
-     * Displays a template block.
-     *
-     * @param string $name    The block name to render
-     * @param array  $context An array of parameters to pass to the template
-     */
-    public function displayBlock($name, $context = array())
-    {
-        $this->template->displayBlock($name, $this->env->mergeGlobals($context));
-    }
-
-    /**
-     * @return Twig_Source
-     */
-    public function getSourceContext()
-    {
-        return $this->template->getSourceContext();
-    }
-}
-
-class_alias('Twig_TemplateWrapper', 'Twig\TemplateWrapper', false);
diff --git a/inc/lib/Twig/Test.php b/inc/lib/Twig/Test.php
deleted file mode 100644
index b450ec62..00000000
--- a/inc/lib/Twig/Test.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Test class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleTest instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a template test.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-abstract class Twig_Test implements Twig_TestInterface, Twig_TestCallableInterface
-{
-    protected $options;
-    protected $arguments = array();
-
-    public function __construct(array $options = array())
-    {
-        $this->options = array_merge(array(
-            'callable' => null,
-        ), $options);
-    }
-
-    public function getCallable()
-    {
-        return $this->options['callable'];
-    }
-}
diff --git a/inc/lib/Twig/Test/Function.php b/inc/lib/Twig/Test/Function.php
deleted file mode 100644
index 9e83c3f8..00000000
--- a/inc/lib/Twig/Test/Function.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Test_Function class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleTest instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a function template test.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Test_Function extends Twig_Test
-{
-    protected $function;
-
-    public function __construct($function, array $options = array())
-    {
-        $options['callable'] = $function;
-
-        parent::__construct($options);
-
-        $this->function = $function;
-    }
-
-    public function compile()
-    {
-        return $this->function;
-    }
-}
diff --git a/inc/lib/Twig/Test/IntegrationTestCase.php b/inc/lib/Twig/Test/IntegrationTestCase.php
deleted file mode 100644
index 016951aa..00000000
--- a/inc/lib/Twig/Test/IntegrationTestCase.php
+++ /dev/null
@@ -1,249 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-use PHPUnit\Framework\TestCase;
-
-/**
- * Integration test helper.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Karma Dordrak <drak@zikula.org>
- */
-abstract class Twig_Test_IntegrationTestCase extends TestCase
-{
-    /**
-     * @return string
-     */
-    abstract protected function getFixturesDir();
-
-    /**
-     * @return Twig_RuntimeLoaderInterface[]
-     */
-    protected function getRuntimeLoaders()
-    {
-        return array();
-    }
-
-    /**
-     * @return Twig_ExtensionInterface[]
-     */
-    protected function getExtensions()
-    {
-        return array();
-    }
-
-    /**
-     * @return Twig_SimpleFilter[]
-     */
-    protected function getTwigFilters()
-    {
-        return array();
-    }
-
-    /**
-     * @return Twig_SimpleFunction[]
-     */
-    protected function getTwigFunctions()
-    {
-        return array();
-    }
-
-    /**
-     * @return Twig_SimpleTest[]
-     */
-    protected function getTwigTests()
-    {
-        return array();
-    }
-
-    /**
-     * @dataProvider getTests
-     */
-    public function testIntegration($file, $message, $condition, $templates, $exception, $outputs)
-    {
-        $this->doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs);
-    }
-
-    /**
-     * @dataProvider getLegacyTests
-     * @group legacy
-     */
-    public function testLegacyIntegration($file, $message, $condition, $templates, $exception, $outputs)
-    {
-        $this->doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs);
-    }
-
-    public function getTests($name, $legacyTests = false)
-    {
-        $fixturesDir = realpath($this->getFixturesDir());
-        $tests = array();
-
-        foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($fixturesDir), RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
-            if (!preg_match('/\.test$/', $file)) {
-                continue;
-            }
-
-            if ($legacyTests xor false !== strpos($file->getRealpath(), '.legacy.test')) {
-                continue;
-            }
-
-            $test = file_get_contents($file->getRealpath());
-
-            if (preg_match('/--TEST--\s*(.*?)\s*(?:--CONDITION--\s*(.*))?\s*((?:--TEMPLATE(?:\(.*?\))?--(?:.*?))+)\s*(?:--DATA--\s*(.*))?\s*--EXCEPTION--\s*(.*)/sx', $test, $match)) {
-                $message = $match[1];
-                $condition = $match[2];
-                $templates = self::parseTemplates($match[3]);
-                $exception = $match[5];
-                $outputs = array(array(null, $match[4], null, ''));
-            } elseif (preg_match('/--TEST--\s*(.*?)\s*(?:--CONDITION--\s*(.*))?\s*((?:--TEMPLATE(?:\(.*?\))?--(?:.*?))+)--DATA--.*?--EXPECT--.*/s', $test, $match)) {
-                $message = $match[1];
-                $condition = $match[2];
-                $templates = self::parseTemplates($match[3]);
-                $exception = false;
-                preg_match_all('/--DATA--(.*?)(?:--CONFIG--(.*?))?--EXPECT--(.*?)(?=\-\-DATA\-\-|$)/s', $test, $outputs, PREG_SET_ORDER);
-            } else {
-                throw new InvalidArgumentException(sprintf('Test "%s" is not valid.', str_replace($fixturesDir.'/', '', $file)));
-            }
-
-            $tests[] = array(str_replace($fixturesDir.'/', '', $file), $message, $condition, $templates, $exception, $outputs);
-        }
-
-        if ($legacyTests && empty($tests)) {
-            // add a dummy test to avoid a PHPUnit message
-            return array(array('not', '-', '', array(), '', array()));
-        }
-
-        return $tests;
-    }
-
-    public function getLegacyTests()
-    {
-        return $this->getTests('testLegacyIntegration', true);
-    }
-
-    protected function doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs)
-    {
-        if (!$outputs) {
-            $this->markTestSkipped('no legacy tests to run');
-        }
-
-        if ($condition) {
-            eval('$ret = '.$condition.';');
-            if (!$ret) {
-                $this->markTestSkipped($condition);
-            }
-        }
-
-        $loader = new Twig_Loader_Array($templates);
-
-        foreach ($outputs as $i => $match) {
-            $config = array_merge(array(
-                'cache' => false,
-                'strict_variables' => true,
-            ), $match[2] ? eval($match[2].';') : array());
-            $twig = new Twig_Environment($loader, $config);
-            $twig->addGlobal('global', 'global');
-            foreach ($this->getRuntimeLoaders() as $runtimeLoader) {
-                $twig->addRuntimeLoader($runtimeLoader);
-            }
-
-            foreach ($this->getExtensions() as $extension) {
-                $twig->addExtension($extension);
-            }
-
-            foreach ($this->getTwigFilters() as $filter) {
-                $twig->addFilter($filter);
-            }
-
-            foreach ($this->getTwigTests() as $test) {
-                $twig->addTest($test);
-            }
-
-            foreach ($this->getTwigFunctions() as $function) {
-                $twig->addFunction($function);
-            }
-
-            // avoid using the same PHP class name for different cases
-            // only for PHP 5.2+
-            if (PHP_VERSION_ID >= 50300) {
-                $p = new ReflectionProperty($twig, 'templateClassPrefix');
-                $p->setAccessible(true);
-                $p->setValue($twig, '__TwigTemplate_'.hash('sha256', uniqid(mt_rand(), true), false).'_');
-            }
-
-            try {
-                $template = $twig->loadTemplate('index.twig');
-            } catch (Exception $e) {
-                if (false !== $exception) {
-                    $message = $e->getMessage();
-                    $this->assertSame(trim($exception), trim(sprintf('%s: %s', get_class($e), $message)));
-                    $last = substr($message, strlen($message) - 1);
-                    $this->assertTrue('.' === $last || '?' === $last, $message, 'Exception message must end with a dot or a question mark.');
-
-                    return;
-                }
-
-                throw new Twig_Error(sprintf('%s: %s', get_class($e), $e->getMessage()), -1, $file, $e);
-            }
-
-            try {
-                $output = trim($template->render(eval($match[1].';')), "\n ");
-            } catch (Exception $e) {
-                if (false !== $exception) {
-                    $this->assertSame(trim($exception), trim(sprintf('%s: %s', get_class($e), $e->getMessage())));
-
-                    return;
-                }
-
-                $e = new Twig_Error(sprintf('%s: %s', get_class($e), $e->getMessage()), -1, $file, $e);
-
-                $output = trim(sprintf('%s: %s', get_class($e), $e->getMessage()));
-            }
-
-            if (false !== $exception) {
-                list($class) = explode(':', $exception);
-                $constraintClass = class_exists('PHPUnit\Framework\Constraint\Exception') ? 'PHPUnit\Framework\Constraint\Exception' : 'PHPUnit_Framework_Constraint_Exception';
-                $this->assertThat(null, new $constraintClass($class));
-            }
-
-            $expected = trim($match[3], "\n ");
-
-            if ($expected !== $output) {
-                printf("Compiled templates that failed on case %d:\n", $i + 1);
-
-                foreach (array_keys($templates) as $name) {
-                    echo "Template: $name\n";
-                    $loader = $twig->getLoader();
-                    if (!$loader instanceof Twig_SourceContextLoaderInterface) {
-                        $source = new Twig_Source($loader->getSource($name), $name);
-                    } else {
-                        $source = $loader->getSourceContext($name);
-                    }
-                    echo $twig->compile($twig->parse($twig->tokenize($source)));
-                }
-            }
-            $this->assertEquals($expected, $output, $message.' (in '.$file.')');
-        }
-    }
-
-    protected static function parseTemplates($test)
-    {
-        $templates = array();
-        preg_match_all('/--TEMPLATE(?:\((.*?)\))?--(.*?)(?=\-\-TEMPLATE|$)/s', $test, $matches, PREG_SET_ORDER);
-        foreach ($matches as $match) {
-            $templates[($match[1] ? $match[1] : 'index.twig')] = $match[2];
-        }
-
-        return $templates;
-    }
-}
-
-class_alias('Twig_Test_IntegrationTestCase', 'Twig\Test\IntegrationTestCase', false);
diff --git a/inc/lib/Twig/Test/Method.php b/inc/lib/Twig/Test/Method.php
deleted file mode 100644
index feccd5db..00000000
--- a/inc/lib/Twig/Test/Method.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Test_Method class is deprecated since version 1.12 and will be removed in 2.0. Use Twig_SimpleTest instead.', E_USER_DEPRECATED);
-
-/**
- * Represents a method template test.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Test_Method extends Twig_Test
-{
-    protected $extension;
-    protected $method;
-
-    public function __construct(Twig_ExtensionInterface $extension, $method, array $options = array())
-    {
-        $options['callable'] = array($extension, $method);
-
-        parent::__construct($options);
-
-        $this->extension = $extension;
-        $this->method = $method;
-    }
-
-    public function compile()
-    {
-        return sprintf('$this->env->getExtension(\'%s\')->%s', get_class($this->extension), $this->method);
-    }
-}
diff --git a/inc/lib/Twig/Test/Node.php b/inc/lib/Twig/Test/Node.php
deleted file mode 100644
index 6098a527..00000000
--- a/inc/lib/Twig/Test/Node.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-@trigger_error('The Twig_Test_Node class is deprecated since version 1.12 and will be removed in 2.0.', E_USER_DEPRECATED);
-
-/**
- * Represents a template test as a Node.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_Test_Node extends Twig_Test
-{
-    protected $class;
-
-    public function __construct($class, array $options = array())
-    {
-        parent::__construct($options);
-
-        $this->class = $class;
-    }
-
-    public function getClass()
-    {
-        return $this->class;
-    }
-
-    public function compile()
-    {
-    }
-}
diff --git a/inc/lib/Twig/Test/NodeTestCase.php b/inc/lib/Twig/Test/NodeTestCase.php
deleted file mode 100644
index 47942675..00000000
--- a/inc/lib/Twig/Test/NodeTestCase.php
+++ /dev/null
@@ -1,75 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-use PHPUnit\Framework\TestCase;
-
-abstract class Twig_Test_NodeTestCase extends TestCase
-{
-    abstract public function getTests();
-
-    /**
-     * @dataProvider getTests
-     */
-    public function testCompile($node, $source, $environment = null, $isPattern = false)
-    {
-        $this->assertNodeCompilation($source, $node, $environment, $isPattern);
-    }
-
-    public function assertNodeCompilation($source, Twig_Node $node, Twig_Environment $environment = null, $isPattern = false)
-    {
-        $compiler = $this->getCompiler($environment);
-        $compiler->compile($node);
-
-        if ($isPattern) {
-            $this->assertStringMatchesFormat($source, trim($compiler->getSource()));
-        } else {
-            $this->assertEquals($source, trim($compiler->getSource()));
-        }
-    }
-
-    protected function getCompiler(Twig_Environment $environment = null)
-    {
-        return new Twig_Compiler(null === $environment ? $this->getEnvironment() : $environment);
-    }
-
-    protected function getEnvironment()
-    {
-        return new Twig_Environment(new Twig_Loader_Array(array()));
-    }
-
-    protected function getVariableGetter($name, $line = false)
-    {
-        $line = $line > 0 ? "// line {$line}\n" : '';
-
-        if (PHP_VERSION_ID >= 70000) {
-            return sprintf('%s($context["%s"] ?? null)', $line, $name, $name);
-        }
-
-        if (PHP_VERSION_ID >= 50400) {
-            return sprintf('%s(isset($context["%s"]) ? $context["%s"] : null)', $line, $name, $name);
-        }
-
-        return sprintf('%s$this->getContext($context, "%s")', $line, $name);
-    }
-
-    protected function getAttributeGetter()
-    {
-        if (function_exists('twig_template_get_attributes')) {
-            return 'twig_template_get_attributes($this, ';
-        }
-
-        return '$this->getAttribute(';
-    }
-}
-
-class_alias('Twig_Test_NodeTestCase', 'Twig\Test\NodeTestCase', false);
-class_exists('Twig_Environment');
-class_exists('Twig_Node');
diff --git a/inc/lib/Twig/TestCallableInterface.php b/inc/lib/Twig/TestCallableInterface.php
deleted file mode 100644
index 51ecb9a2..00000000
--- a/inc/lib/Twig/TestCallableInterface.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a callable template test.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_TestCallableInterface
-{
-    public function getCallable();
-}
diff --git a/inc/lib/Twig/TestInterface.php b/inc/lib/Twig/TestInterface.php
deleted file mode 100644
index 91664075..00000000
--- a/inc/lib/Twig/TestInterface.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a template test.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_TestInterface
-{
-    /**
-     * Compiles a test.
-     *
-     * @return string The PHP code for the test
-     */
-    public function compile();
-}
diff --git a/inc/lib/Twig/Token.php b/inc/lib/Twig/Token.php
deleted file mode 100644
index 89066869..00000000
--- a/inc/lib/Twig/Token.php
+++ /dev/null
@@ -1,207 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a Token.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Token
-{
-    protected $value;
-    protected $type;
-    protected $lineno;
-
-    const EOF_TYPE = -1;
-    const TEXT_TYPE = 0;
-    const BLOCK_START_TYPE = 1;
-    const VAR_START_TYPE = 2;
-    const BLOCK_END_TYPE = 3;
-    const VAR_END_TYPE = 4;
-    const NAME_TYPE = 5;
-    const NUMBER_TYPE = 6;
-    const STRING_TYPE = 7;
-    const OPERATOR_TYPE = 8;
-    const PUNCTUATION_TYPE = 9;
-    const INTERPOLATION_START_TYPE = 10;
-    const INTERPOLATION_END_TYPE = 11;
-
-    /**
-     * @param int    $type   The type of the token
-     * @param string $value  The token value
-     * @param int    $lineno The line position in the source
-     */
-    public function __construct($type, $value, $lineno)
-    {
-        $this->type = $type;
-        $this->value = $value;
-        $this->lineno = $lineno;
-    }
-
-    public function __toString()
-    {
-        return sprintf('%s(%s)', self::typeToString($this->type, true), $this->value);
-    }
-
-    /**
-     * Tests the current token for a type and/or a value.
-     *
-     * Parameters may be:
-     *  * just type
-     *  * type and value (or array of possible values)
-     *  * just value (or array of possible values) (NAME_TYPE is used as type)
-     *
-     * @param array|string|int  $type   The type to test
-     * @param array|string|null $values The token value
-     *
-     * @return bool
-     */
-    public function test($type, $values = null)
-    {
-        if (null === $values && !is_int($type)) {
-            $values = $type;
-            $type = self::NAME_TYPE;
-        }
-
-        return ($this->type === $type) && (
-            null === $values ||
-            (is_array($values) && in_array($this->value, $values)) ||
-            $this->value == $values
-        );
-    }
-
-    /**
-     * @return int
-     */
-    public function getLine()
-    {
-        return $this->lineno;
-    }
-
-    /**
-     * @return int
-     */
-    public function getType()
-    {
-        return $this->type;
-    }
-
-    /**
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Returns the constant representation (internal) of a given type.
-     *
-     * @param int  $type  The type as an integer
-     * @param bool $short Whether to return a short representation or not
-     *
-     * @return string The string representation
-     */
-    public static function typeToString($type, $short = false)
-    {
-        switch ($type) {
-            case self::EOF_TYPE:
-                $name = 'EOF_TYPE';
-                break;
-            case self::TEXT_TYPE:
-                $name = 'TEXT_TYPE';
-                break;
-            case self::BLOCK_START_TYPE:
-                $name = 'BLOCK_START_TYPE';
-                break;
-            case self::VAR_START_TYPE:
-                $name = 'VAR_START_TYPE';
-                break;
-            case self::BLOCK_END_TYPE:
-                $name = 'BLOCK_END_TYPE';
-                break;
-            case self::VAR_END_TYPE:
-                $name = 'VAR_END_TYPE';
-                break;
-            case self::NAME_TYPE:
-                $name = 'NAME_TYPE';
-                break;
-            case self::NUMBER_TYPE:
-                $name = 'NUMBER_TYPE';
-                break;
-            case self::STRING_TYPE:
-                $name = 'STRING_TYPE';
-                break;
-            case self::OPERATOR_TYPE:
-                $name = 'OPERATOR_TYPE';
-                break;
-            case self::PUNCTUATION_TYPE:
-                $name = 'PUNCTUATION_TYPE';
-                break;
-            case self::INTERPOLATION_START_TYPE:
-                $name = 'INTERPOLATION_START_TYPE';
-                break;
-            case self::INTERPOLATION_END_TYPE:
-                $name = 'INTERPOLATION_END_TYPE';
-                break;
-            default:
-                throw new LogicException(sprintf('Token of type "%s" does not exist.', $type));
-        }
-
-        return $short ? $name : 'Twig_Token::'.$name;
-    }
-
-    /**
-     * Returns the English representation of a given type.
-     *
-     * @param int $type The type as an integer
-     *
-     * @return string The string representation
-     */
-    public static function typeToEnglish($type)
-    {
-        switch ($type) {
-            case self::EOF_TYPE:
-                return 'end of template';
-            case self::TEXT_TYPE:
-                return 'text';
-            case self::BLOCK_START_TYPE:
-                return 'begin of statement block';
-            case self::VAR_START_TYPE:
-                return 'begin of print statement';
-            case self::BLOCK_END_TYPE:
-                return 'end of statement block';
-            case self::VAR_END_TYPE:
-                return 'end of print statement';
-            case self::NAME_TYPE:
-                return 'name';
-            case self::NUMBER_TYPE:
-                return 'number';
-            case self::STRING_TYPE:
-                return 'string';
-            case self::OPERATOR_TYPE:
-                return 'operator';
-            case self::PUNCTUATION_TYPE:
-                return 'punctuation';
-            case self::INTERPOLATION_START_TYPE:
-                return 'begin of string interpolation';
-            case self::INTERPOLATION_END_TYPE:
-                return 'end of string interpolation';
-            default:
-                throw new LogicException(sprintf('Token of type "%s" does not exist.', $type));
-        }
-    }
-}
-
-class_alias('Twig_Token', 'Twig\Token', false);
diff --git a/inc/lib/Twig/TokenParser.php b/inc/lib/Twig/TokenParser.php
deleted file mode 100644
index 1b4de14d..00000000
--- a/inc/lib/Twig/TokenParser.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Base class for all token parsers.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-abstract class Twig_TokenParser implements Twig_TokenParserInterface
-{
-    /**
-     * @var Twig_Parser
-     */
-    protected $parser;
-
-    /**
-     * Sets the parser associated with this token parser.
-     */
-    public function setParser(Twig_Parser $parser)
-    {
-        $this->parser = $parser;
-    }
-}
-
-class_alias('Twig_TokenParser', 'Twig\TokenParser\AbstractTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/AutoEscape.php b/inc/lib/Twig/TokenParser/AutoEscape.php
deleted file mode 100644
index a20dedd1..00000000
--- a/inc/lib/Twig/TokenParser/AutoEscape.php
+++ /dev/null
@@ -1,83 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Marks a section of a template to be escaped or not.
- *
- * <pre>
- * {% autoescape true %}
- *   Everything will be automatically escaped in this block
- * {% endautoescape %}
- *
- * {% autoescape false %}
- *   Everything will be outputed as is in this block
- * {% endautoescape %}
- *
- * {% autoescape true js %}
- *   Everything will be automatically escaped in this block
- *   using the js escaping strategy
- * {% endautoescape %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_AutoEscape extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $stream = $this->parser->getStream();
-
-        if ($stream->test(Twig_Token::BLOCK_END_TYPE)) {
-            $value = 'html';
-        } else {
-            $expr = $this->parser->getExpressionParser()->parseExpression();
-            if (!$expr instanceof Twig_Node_Expression_Constant) {
-                throw new Twig_Error_Syntax('An escaping strategy must be a string or a bool.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
-            }
-            $value = $expr->getAttribute('value');
-
-            $compat = true === $value || false === $value;
-
-            if (true === $value) {
-                $value = 'html';
-            }
-
-            if ($compat && $stream->test(Twig_Token::NAME_TYPE)) {
-                @trigger_error('Using the autoescape tag with "true" or "false" before the strategy name is deprecated since version 1.21.', E_USER_DEPRECATED);
-
-                if (false === $value) {
-                    throw new Twig_Error_Syntax('Unexpected escaping strategy as you set autoescaping to false.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
-                }
-
-                $value = $stream->next()->getValue();
-            }
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_AutoEscape($value, $body, $lineno, $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endautoescape');
-    }
-
-    public function getTag()
-    {
-        return 'autoescape';
-    }
-}
-
-class_alias('Twig_TokenParser_AutoEscape', 'Twig\TokenParser\AutoEscapeTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Block.php b/inc/lib/Twig/TokenParser/Block.php
deleted file mode 100644
index f30f86b5..00000000
--- a/inc/lib/Twig/TokenParser/Block.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Marks a section of a template as being reusable.
- *
- * <pre>
- *  {% block head %}
- *    <link rel="stylesheet" href="style.css" />
- *    <title>{% block title %}{% endblock %} - My Webpage</title>
- *  {% endblock %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Block extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $stream = $this->parser->getStream();
-        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-        if ($this->parser->hasBlock($name)) {
-            throw new Twig_Error_Syntax(sprintf("The block '%s' has already been defined line %d.", $name, $this->parser->getBlock($name)->getTemplateLine()), $stream->getCurrent()->getLine(), $stream->getSourceContext());
-        }
-        $this->parser->setBlock($name, $block = new Twig_Node_Block($name, new Twig_Node(array()), $lineno));
-        $this->parser->pushLocalScope();
-        $this->parser->pushBlockStack($name);
-
-        if ($stream->nextIf(Twig_Token::BLOCK_END_TYPE)) {
-            $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-            if ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) {
-                $value = $token->getValue();
-
-                if ($value != $name) {
-                    throw new Twig_Error_Syntax(sprintf('Expected endblock for block "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
-                }
-            }
-        } else {
-            $body = new Twig_Node(array(
-                new Twig_Node_Print($this->parser->getExpressionParser()->parseExpression(), $lineno),
-            ));
-        }
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $block->setNode('body', $body);
-        $this->parser->popBlockStack();
-        $this->parser->popLocalScope();
-
-        return new Twig_Node_BlockReference($name, $lineno, $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endblock');
-    }
-
-    public function getTag()
-    {
-        return 'block';
-    }
-}
-
-class_alias('Twig_TokenParser_Block', 'Twig\TokenParser\BlockTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Do.php b/inc/lib/Twig/TokenParser/Do.php
deleted file mode 100644
index 8ce08808..00000000
--- a/inc/lib/Twig/TokenParser/Do.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Evaluates an expression, discarding the returned value.
- *
- * @final
- */
-class Twig_TokenParser_Do extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $expr = $this->parser->getExpressionParser()->parseExpression();
-
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_Do($expr, $token->getLine(), $this->getTag());
-    }
-
-    public function getTag()
-    {
-        return 'do';
-    }
-}
-
-class_alias('Twig_TokenParser_Do', 'Twig\TokenParser\DoTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Embed.php b/inc/lib/Twig/TokenParser/Embed.php
deleted file mode 100644
index 44644cc6..00000000
--- a/inc/lib/Twig/TokenParser/Embed.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Embeds a template.
- *
- * @final
- */
-class Twig_TokenParser_Embed extends Twig_TokenParser_Include
-{
-    public function parse(Twig_Token $token)
-    {
-        $stream = $this->parser->getStream();
-
-        $parent = $this->parser->getExpressionParser()->parseExpression();
-
-        list($variables, $only, $ignoreMissing) = $this->parseArguments();
-
-        $parentToken = $fakeParentToken = new Twig_Token(Twig_Token::STRING_TYPE, '__parent__', $token->getLine());
-        if ($parent instanceof Twig_Node_Expression_Constant) {
-            $parentToken = new Twig_Token(Twig_Token::STRING_TYPE, $parent->getAttribute('value'), $token->getLine());
-        } elseif ($parent instanceof Twig_Node_Expression_Name) {
-            $parentToken = new Twig_Token(Twig_Token::NAME_TYPE, $parent->getAttribute('name'), $token->getLine());
-        }
-
-        // inject a fake parent to make the parent() function work
-        $stream->injectTokens(array(
-            new Twig_Token(Twig_Token::BLOCK_START_TYPE, '', $token->getLine()),
-            new Twig_Token(Twig_Token::NAME_TYPE, 'extends', $token->getLine()),
-            $parentToken,
-            new Twig_Token(Twig_Token::BLOCK_END_TYPE, '', $token->getLine()),
-        ));
-
-        $module = $this->parser->parse($stream, array($this, 'decideBlockEnd'), true);
-
-        // override the parent with the correct one
-        if ($fakeParentToken === $parentToken) {
-            $module->setNode('parent', $parent);
-        }
-
-        $this->parser->embedTemplate($module);
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_Embed($module->getTemplateName(), $module->getAttribute('index'), $variables, $only, $ignoreMissing, $token->getLine(), $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endembed');
-    }
-
-    public function getTag()
-    {
-        return 'embed';
-    }
-}
-
-class_alias('Twig_TokenParser_Embed', 'Twig\TokenParser\EmbedTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Extends.php b/inc/lib/Twig/TokenParser/Extends.php
deleted file mode 100644
index 31168cce..00000000
--- a/inc/lib/Twig/TokenParser/Extends.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Extends a template by another one.
- *
- * <pre>
- *  {% extends "base.html" %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Extends extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $stream = $this->parser->getStream();
-
-        if (!$this->parser->isMainScope()) {
-            throw new Twig_Error_Syntax('Cannot extend from a block.', $token->getLine(), $stream->getSourceContext());
-        }
-
-        if (null !== $this->parser->getParent()) {
-            throw new Twig_Error_Syntax('Multiple extends tags are forbidden.', $token->getLine(), $stream->getSourceContext());
-        }
-        $this->parser->setParent($this->parser->getExpressionParser()->parseExpression());
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-    }
-
-    public function getTag()
-    {
-        return 'extends';
-    }
-}
-
-class_alias('Twig_TokenParser_Extends', 'Twig\TokenParser\ExtendsTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Filter.php b/inc/lib/Twig/TokenParser/Filter.php
deleted file mode 100644
index 76017829..00000000
--- a/inc/lib/Twig/TokenParser/Filter.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Filters a section of a template by applying filters.
- *
- * <pre>
- * {% filter upper %}
- *  This text becomes uppercase
- * {% endfilter %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Filter extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $name = $this->parser->getVarName();
-        $ref = new Twig_Node_Expression_BlockReference(new Twig_Node_Expression_Constant($name, $token->getLine()), null, $token->getLine(), $this->getTag());
-
-        $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $block = new Twig_Node_Block($name, $body, $token->getLine());
-        $this->parser->setBlock($name, $block);
-
-        return new Twig_Node_Print($filter, $token->getLine(), $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endfilter');
-    }
-
-    public function getTag()
-    {
-        return 'filter';
-    }
-}
-
-class_alias('Twig_TokenParser_Filter', 'Twig\TokenParser\FilterTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Flush.php b/inc/lib/Twig/TokenParser/Flush.php
deleted file mode 100644
index 51832c77..00000000
--- a/inc/lib/Twig/TokenParser/Flush.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Flushes the output to the client.
- *
- * @see flush()
- *
- * @final
- */
-class Twig_TokenParser_Flush extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_Flush($token->getLine(), $this->getTag());
-    }
-
-    public function getTag()
-    {
-        return 'flush';
-    }
-}
-
-class_alias('Twig_TokenParser_Flush', 'Twig\TokenParser\FlushTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/For.php b/inc/lib/Twig/TokenParser/For.php
deleted file mode 100644
index 8e737c5f..00000000
--- a/inc/lib/Twig/TokenParser/For.php
+++ /dev/null
@@ -1,127 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Loops over each item of a sequence.
- *
- * <pre>
- * <ul>
- *  {% for user in users %}
- *    <li>{{ user.username|e }}</li>
- *  {% endfor %}
- * </ul>
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_For extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $stream = $this->parser->getStream();
-        $targets = $this->parser->getExpressionParser()->parseAssignmentExpression();
-        $stream->expect(Twig_Token::OPERATOR_TYPE, 'in');
-        $seq = $this->parser->getExpressionParser()->parseExpression();
-
-        $ifexpr = null;
-        if ($stream->nextIf(Twig_Token::NAME_TYPE, 'if')) {
-            $ifexpr = $this->parser->getExpressionParser()->parseExpression();
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideForFork'));
-        if ('else' == $stream->next()->getValue()) {
-            $stream->expect(Twig_Token::BLOCK_END_TYPE);
-            $else = $this->parser->subparse(array($this, 'decideForEnd'), true);
-        } else {
-            $else = null;
-        }
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        if (count($targets) > 1) {
-            $keyTarget = $targets->getNode(0);
-            $keyTarget = new Twig_Node_Expression_AssignName($keyTarget->getAttribute('name'), $keyTarget->getTemplateLine());
-            $valueTarget = $targets->getNode(1);
-            $valueTarget = new Twig_Node_Expression_AssignName($valueTarget->getAttribute('name'), $valueTarget->getTemplateLine());
-        } else {
-            $keyTarget = new Twig_Node_Expression_AssignName('_key', $lineno);
-            $valueTarget = $targets->getNode(0);
-            $valueTarget = new Twig_Node_Expression_AssignName($valueTarget->getAttribute('name'), $valueTarget->getTemplateLine());
-        }
-
-        if ($ifexpr) {
-            $this->checkLoopUsageCondition($stream, $ifexpr);
-            $this->checkLoopUsageBody($stream, $body);
-        }
-
-        return new Twig_Node_For($keyTarget, $valueTarget, $seq, $ifexpr, $body, $else, $lineno, $this->getTag());
-    }
-
-    public function decideForFork(Twig_Token $token)
-    {
-        return $token->test(array('else', 'endfor'));
-    }
-
-    public function decideForEnd(Twig_Token $token)
-    {
-        return $token->test('endfor');
-    }
-
-    // the loop variable cannot be used in the condition
-    protected function checkLoopUsageCondition(Twig_TokenStream $stream, Twig_NodeInterface $node)
-    {
-        if ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name && 'loop' == $node->getNode('node')->getAttribute('name')) {
-            throw new Twig_Error_Syntax('The "loop" variable cannot be used in a looping condition.', $node->getTemplateLine(), $stream->getSourceContext());
-        }
-
-        foreach ($node as $n) {
-            if (!$n) {
-                continue;
-            }
-
-            $this->checkLoopUsageCondition($stream, $n);
-        }
-    }
-
-    // check usage of non-defined loop-items
-    // it does not catch all problems (for instance when a for is included into another or when the variable is used in an include)
-    protected function checkLoopUsageBody(Twig_TokenStream $stream, Twig_NodeInterface $node)
-    {
-        if ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name && 'loop' == $node->getNode('node')->getAttribute('name')) {
-            $attribute = $node->getNode('attribute');
-            if ($attribute instanceof Twig_Node_Expression_Constant && in_array($attribute->getAttribute('value'), array('length', 'revindex0', 'revindex', 'last'))) {
-                throw new Twig_Error_Syntax(sprintf('The "loop.%s" variable is not defined when looping with a condition.', $attribute->getAttribute('value')), $node->getTemplateLine(), $stream->getSourceContext());
-            }
-        }
-
-        // should check for parent.loop.XXX usage
-        if ($node instanceof Twig_Node_For) {
-            return;
-        }
-
-        foreach ($node as $n) {
-            if (!$n) {
-                continue;
-            }
-
-            $this->checkLoopUsageBody($stream, $n);
-        }
-    }
-
-    public function getTag()
-    {
-        return 'for';
-    }
-}
-
-class_alias('Twig_TokenParser_For', 'Twig\TokenParser\ForTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/From.php b/inc/lib/Twig/TokenParser/From.php
deleted file mode 100644
index f3053da4..00000000
--- a/inc/lib/Twig/TokenParser/From.php
+++ /dev/null
@@ -1,66 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Imports macros.
- *
- * <pre>
- *   {% from 'forms.html' import forms %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_From extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $macro = $this->parser->getExpressionParser()->parseExpression();
-        $stream = $this->parser->getStream();
-        $stream->expect('import');
-
-        $targets = array();
-        do {
-            $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-
-            $alias = $name;
-            if ($stream->nextIf('as')) {
-                $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-            }
-
-            $targets[$name] = $alias;
-
-            if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
-                break;
-            }
-        } while (true);
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $node = new Twig_Node_Import($macro, new Twig_Node_Expression_AssignName($this->parser->getVarName(), $token->getLine()), $token->getLine(), $this->getTag());
-
-        foreach ($targets as $name => $alias) {
-            if ($this->parser->isReservedMacroName($name)) {
-                throw new Twig_Error_Syntax(sprintf('"%s" cannot be an imported macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getSourceContext());
-            }
-
-            $this->parser->addImportedSymbol('function', $alias, 'get'.$name, $node->getNode('var'));
-        }
-
-        return $node;
-    }
-
-    public function getTag()
-    {
-        return 'from';
-    }
-}
-
-class_alias('Twig_TokenParser_From', 'Twig\TokenParser\FromTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/If.php b/inc/lib/Twig/TokenParser/If.php
deleted file mode 100644
index f081df3a..00000000
--- a/inc/lib/Twig/TokenParser/If.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Tests a condition.
- *
- * <pre>
- * {% if users %}
- *  <ul>
- *    {% for user in users %}
- *      <li>{{ user.username|e }}</li>
- *    {% endfor %}
- *  </ul>
- * {% endif %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_If extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $expr = $this->parser->getExpressionParser()->parseExpression();
-        $stream = $this->parser->getStream();
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideIfFork'));
-        $tests = array($expr, $body);
-        $else = null;
-
-        $end = false;
-        while (!$end) {
-            switch ($stream->next()->getValue()) {
-                case 'else':
-                    $stream->expect(Twig_Token::BLOCK_END_TYPE);
-                    $else = $this->parser->subparse(array($this, 'decideIfEnd'));
-                    break;
-
-                case 'elseif':
-                    $expr = $this->parser->getExpressionParser()->parseExpression();
-                    $stream->expect(Twig_Token::BLOCK_END_TYPE);
-                    $body = $this->parser->subparse(array($this, 'decideIfFork'));
-                    $tests[] = $expr;
-                    $tests[] = $body;
-                    break;
-
-                case 'endif':
-                    $end = true;
-                    break;
-
-                default:
-                    throw new Twig_Error_Syntax(sprintf('Unexpected end of template. Twig was looking for the following tags "else", "elseif", or "endif" to close the "if" block started at line %d).', $lineno), $stream->getCurrent()->getLine(), $stream->getSourceContext());
-            }
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag());
-    }
-
-    public function decideIfFork(Twig_Token $token)
-    {
-        return $token->test(array('elseif', 'else', 'endif'));
-    }
-
-    public function decideIfEnd(Twig_Token $token)
-    {
-        return $token->test(array('endif'));
-    }
-
-    public function getTag()
-    {
-        return 'if';
-    }
-}
-
-class_alias('Twig_TokenParser_If', 'Twig\TokenParser\IfTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Import.php b/inc/lib/Twig/TokenParser/Import.php
deleted file mode 100644
index 47802f50..00000000
--- a/inc/lib/Twig/TokenParser/Import.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Imports macros.
- *
- * <pre>
- *   {% import 'forms.html' as forms %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Import extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $macro = $this->parser->getExpressionParser()->parseExpression();
-        $this->parser->getStream()->expect('as');
-        $var = new Twig_Node_Expression_AssignName($this->parser->getStream()->expect(Twig_Token::NAME_TYPE)->getValue(), $token->getLine());
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $this->parser->addImportedSymbol('template', $var->getAttribute('name'));
-
-        return new Twig_Node_Import($macro, $var, $token->getLine(), $this->getTag());
-    }
-
-    public function getTag()
-    {
-        return 'import';
-    }
-}
-
-class_alias('Twig_TokenParser_Import', 'Twig\TokenParser\ImportTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Include.php b/inc/lib/Twig/TokenParser/Include.php
deleted file mode 100644
index 309f11db..00000000
--- a/inc/lib/Twig/TokenParser/Include.php
+++ /dev/null
@@ -1,65 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Includes a template.
- *
- * <pre>
- *   {% include 'header.html' %}
- *     Body
- *   {% include 'footer.html' %}
- * </pre>
- */
-class Twig_TokenParser_Include extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $expr = $this->parser->getExpressionParser()->parseExpression();
-
-        list($variables, $only, $ignoreMissing) = $this->parseArguments();
-
-        return new Twig_Node_Include($expr, $variables, $only, $ignoreMissing, $token->getLine(), $this->getTag());
-    }
-
-    protected function parseArguments()
-    {
-        $stream = $this->parser->getStream();
-
-        $ignoreMissing = false;
-        if ($stream->nextIf(Twig_Token::NAME_TYPE, 'ignore')) {
-            $stream->expect(Twig_Token::NAME_TYPE, 'missing');
-
-            $ignoreMissing = true;
-        }
-
-        $variables = null;
-        if ($stream->nextIf(Twig_Token::NAME_TYPE, 'with')) {
-            $variables = $this->parser->getExpressionParser()->parseExpression();
-        }
-
-        $only = false;
-        if ($stream->nextIf(Twig_Token::NAME_TYPE, 'only')) {
-            $only = true;
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return array($variables, $only, $ignoreMissing);
-    }
-
-    public function getTag()
-    {
-        return 'include';
-    }
-}
-
-class_alias('Twig_TokenParser_Include', 'Twig\TokenParser\IncludeTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Macro.php b/inc/lib/Twig/TokenParser/Macro.php
deleted file mode 100644
index 4287934b..00000000
--- a/inc/lib/Twig/TokenParser/Macro.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Defines a macro.
- *
- * <pre>
- * {% macro input(name, value, type, size) %}
- *    <input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" />
- * {% endmacro %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Macro extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $stream = $this->parser->getStream();
-        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-
-        $arguments = $this->parser->getExpressionParser()->parseArguments(true, true);
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        $this->parser->pushLocalScope();
-        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-        if ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) {
-            $value = $token->getValue();
-
-            if ($value != $name) {
-                throw new Twig_Error_Syntax(sprintf('Expected endmacro for macro "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
-            }
-        }
-        $this->parser->popLocalScope();
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $this->parser->setMacro($name, new Twig_Node_Macro($name, new Twig_Node_Body(array($body)), $arguments, $lineno, $this->getTag()));
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endmacro');
-    }
-
-    public function getTag()
-    {
-        return 'macro';
-    }
-}
-
-class_alias('Twig_TokenParser_Macro', 'Twig\TokenParser\MacroTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Sandbox.php b/inc/lib/Twig/TokenParser/Sandbox.php
deleted file mode 100644
index 7fc70d9a..00000000
--- a/inc/lib/Twig/TokenParser/Sandbox.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Marks a section of a template as untrusted code that must be evaluated in the sandbox mode.
- *
- * <pre>
- * {% sandbox %}
- *     {% include 'user.html' %}
- * {% endsandbox %}
- * </pre>
- *
- * @see https://twig.symfony.com/doc/api.html#sandbox-extension for details
- *
- * @final
- */
-class Twig_TokenParser_Sandbox extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $stream = $this->parser->getStream();
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        // in a sandbox tag, only include tags are allowed
-        if (!$body instanceof Twig_Node_Include) {
-            foreach ($body as $node) {
-                if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
-                    continue;
-                }
-
-                if (!$node instanceof Twig_Node_Include) {
-                    throw new Twig_Error_Syntax('Only "include" tags are allowed within a "sandbox" section.', $node->getTemplateLine(), $stream->getSourceContext());
-                }
-            }
-        }
-
-        return new Twig_Node_Sandbox($body, $token->getLine(), $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endsandbox');
-    }
-
-    public function getTag()
-    {
-        return 'sandbox';
-    }
-}
-
-class_alias('Twig_TokenParser_Sandbox', 'Twig\TokenParser\SandboxTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Set.php b/inc/lib/Twig/TokenParser/Set.php
deleted file mode 100644
index 48c6b3ae..00000000
--- a/inc/lib/Twig/TokenParser/Set.php
+++ /dev/null
@@ -1,75 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Defines a variable.
- *
- * <pre>
- *  {% set foo = 'foo' %}
- *
- *  {% set foo = [1, 2] %}
- *
- *  {% set foo = {'foo': 'bar'} %}
- *
- *  {% set foo = 'foo' ~ 'bar' %}
- *
- *  {% set foo, bar = 'foo', 'bar' %}
- *
- *  {% set foo %}Some content{% endset %}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Set extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-        $stream = $this->parser->getStream();
-        $names = $this->parser->getExpressionParser()->parseAssignmentExpression();
-
-        $capture = false;
-        if ($stream->nextIf(Twig_Token::OPERATOR_TYPE, '=')) {
-            $values = $this->parser->getExpressionParser()->parseMultitargetExpression();
-
-            $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-            if (count($names) !== count($values)) {
-                throw new Twig_Error_Syntax('When using set, you must have the same number of variables and assignments.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
-            }
-        } else {
-            $capture = true;
-
-            if (count($names) > 1) {
-                throw new Twig_Error_Syntax('When using set with a block, you cannot have a multi-target.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
-            }
-
-            $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-            $values = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
-            $stream->expect(Twig_Token::BLOCK_END_TYPE);
-        }
-
-        return new Twig_Node_Set($capture, $names, $values, $lineno, $this->getTag());
-    }
-
-    public function decideBlockEnd(Twig_Token $token)
-    {
-        return $token->test('endset');
-    }
-
-    public function getTag()
-    {
-        return 'set';
-    }
-}
-
-class_alias('Twig_TokenParser_Set', 'Twig\TokenParser\SetTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Spaceless.php b/inc/lib/Twig/TokenParser/Spaceless.php
deleted file mode 100644
index cecf27c6..00000000
--- a/inc/lib/Twig/TokenParser/Spaceless.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Remove whitespaces between HTML tags.
- *
- * <pre>
- * {% spaceless %}
- *      <div>
- *          <strong>foo</strong>
- *      </div>
- * {% endspaceless %}
- *
- * {# output will be <div><strong>foo</strong></div> #}
- * </pre>
- *
- * @final
- */
-class Twig_TokenParser_Spaceless extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $lineno = $token->getLine();
-
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideSpacelessEnd'), true);
-        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_Spaceless($body, $lineno, $this->getTag());
-    }
-
-    public function decideSpacelessEnd(Twig_Token $token)
-    {
-        return $token->test('endspaceless');
-    }
-
-    public function getTag()
-    {
-        return 'spaceless';
-    }
-}
-
-class_alias('Twig_TokenParser_Spaceless', 'Twig\TokenParser\SpacelessTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/Use.php b/inc/lib/Twig/TokenParser/Use.php
deleted file mode 100644
index 1ab24e2c..00000000
--- a/inc/lib/Twig/TokenParser/Use.php
+++ /dev/null
@@ -1,70 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Imports blocks defined in another template into the current template.
- *
- * <pre>
- * {% extends "base.html" %}
- *
- * {% use "blocks.html" %}
- *
- * {% block title %}{% endblock %}
- * {% block content %}{% endblock %}
- * </pre>
- *
- * @see https://twig.symfony.com/doc/templates.html#horizontal-reuse for details.
- *
- * @final
- */
-class Twig_TokenParser_Use extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $template = $this->parser->getExpressionParser()->parseExpression();
-        $stream = $this->parser->getStream();
-
-        if (!$template instanceof Twig_Node_Expression_Constant) {
-            throw new Twig_Error_Syntax('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
-        }
-
-        $targets = array();
-        if ($stream->nextIf('with')) {
-            do {
-                $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-
-                $alias = $name;
-                if ($stream->nextIf('as')) {
-                    $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
-                }
-
-                $targets[$name] = new Twig_Node_Expression_Constant($alias, -1);
-
-                if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
-                    break;
-                }
-            } while (true);
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $this->parser->addTrait(new Twig_Node(array('template' => $template, 'targets' => new Twig_Node($targets))));
-
-        return new Twig_Node();
-    }
-
-    public function getTag()
-    {
-        return 'use';
-    }
-}
-
-class_alias('Twig_TokenParser_Use', 'Twig\TokenParser\UseTokenParser', false);
diff --git a/inc/lib/Twig/TokenParser/With.php b/inc/lib/Twig/TokenParser/With.php
deleted file mode 100644
index 7a692597..00000000
--- a/inc/lib/Twig/TokenParser/With.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Creates a nested scope.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_TokenParser_With extends Twig_TokenParser
-{
-    public function parse(Twig_Token $token)
-    {
-        $stream = $this->parser->getStream();
-
-        $variables = null;
-        $only = false;
-        if (!$stream->test(Twig_Token::BLOCK_END_TYPE)) {
-            $variables = $this->parser->getExpressionParser()->parseExpression();
-            $only = $stream->nextIf(Twig_Token::NAME_TYPE, 'only');
-        }
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        $body = $this->parser->subparse(array($this, 'decideWithEnd'), true);
-
-        $stream->expect(Twig_Token::BLOCK_END_TYPE);
-
-        return new Twig_Node_With($body, $variables, $only, $token->getLine(), $this->getTag());
-    }
-
-    public function decideWithEnd(Twig_Token $token)
-    {
-        return $token->test('endwith');
-    }
-
-    public function getTag()
-    {
-        return 'with';
-    }
-}
-
-class_alias('Twig_TokenParser_With', 'Twig\TokenParser\WithTokenParser', false);
diff --git a/inc/lib/Twig/TokenParserBroker.php b/inc/lib/Twig/TokenParserBroker.php
deleted file mode 100644
index 0d7d6e52..00000000
--- a/inc/lib/Twig/TokenParserBroker.php
+++ /dev/null
@@ -1,120 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Arnaud Le Blanc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Default implementation of a token parser broker.
- *
- * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-class Twig_TokenParserBroker implements Twig_TokenParserBrokerInterface
-{
-    protected $parser;
-    protected $parsers = array();
-    protected $brokers = array();
-
-    /**
-     * @param array|Traversable $parsers                 A Traversable of Twig_TokenParserInterface instances
-     * @param array|Traversable $brokers                 A Traversable of Twig_TokenParserBrokerInterface instances
-     * @param bool              $triggerDeprecationError
-     */
-    public function __construct($parsers = array(), $brokers = array(), $triggerDeprecationError = true)
-    {
-        if ($triggerDeprecationError) {
-            @trigger_error('The '.__CLASS__.' class is deprecated since version 1.12 and will be removed in 2.0.', E_USER_DEPRECATED);
-        }
-
-        foreach ($parsers as $parser) {
-            if (!$parser instanceof Twig_TokenParserInterface) {
-                throw new LogicException('$parsers must a an array of Twig_TokenParserInterface.');
-            }
-            $this->parsers[$parser->getTag()] = $parser;
-        }
-        foreach ($brokers as $broker) {
-            if (!$broker instanceof Twig_TokenParserBrokerInterface) {
-                throw new LogicException('$brokers must a an array of Twig_TokenParserBrokerInterface.');
-            }
-            $this->brokers[] = $broker;
-        }
-    }
-
-    public function addTokenParser(Twig_TokenParserInterface $parser)
-    {
-        $this->parsers[$parser->getTag()] = $parser;
-    }
-
-    public function removeTokenParser(Twig_TokenParserInterface $parser)
-    {
-        $name = $parser->getTag();
-        if (isset($this->parsers[$name]) && $parser === $this->parsers[$name]) {
-            unset($this->parsers[$name]);
-        }
-    }
-
-    public function addTokenParserBroker(self $broker)
-    {
-        $this->brokers[] = $broker;
-    }
-
-    public function removeTokenParserBroker(self $broker)
-    {
-        if (false !== $pos = array_search($broker, $this->brokers)) {
-            unset($this->brokers[$pos]);
-        }
-    }
-
-    /**
-     * Gets a suitable TokenParser for a tag.
-     *
-     * First looks in parsers, then in brokers.
-     *
-     * @param string $tag A tag name
-     *
-     * @return null|Twig_TokenParserInterface A Twig_TokenParserInterface or null if no suitable TokenParser was found
-     */
-    public function getTokenParser($tag)
-    {
-        if (isset($this->parsers[$tag])) {
-            return $this->parsers[$tag];
-        }
-        $broker = end($this->brokers);
-        while (false !== $broker) {
-            $parser = $broker->getTokenParser($tag);
-            if (null !== $parser) {
-                return $parser;
-            }
-            $broker = prev($this->brokers);
-        }
-    }
-
-    public function getParsers()
-    {
-        return $this->parsers;
-    }
-
-    public function getParser()
-    {
-        return $this->parser;
-    }
-
-    public function setParser(Twig_ParserInterface $parser)
-    {
-        $this->parser = $parser;
-        foreach ($this->parsers as $tokenParser) {
-            $tokenParser->setParser($parser);
-        }
-        foreach ($this->brokers as $broker) {
-            $broker->setParser($parser);
-        }
-    }
-}
diff --git a/inc/lib/Twig/TokenParserBrokerInterface.php b/inc/lib/Twig/TokenParserBrokerInterface.php
deleted file mode 100644
index 6c93f5ea..00000000
--- a/inc/lib/Twig/TokenParserBrokerInterface.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Arnaud Le Blanc
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by token parser brokers.
- *
- * Token parser brokers allows to implement custom logic in the process of resolving a token parser for a given tag name.
- *
- * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
- *
- * @deprecated since 1.12 (to be removed in 2.0)
- */
-interface Twig_TokenParserBrokerInterface
-{
-    /**
-     * Gets a TokenParser suitable for a tag.
-     *
-     * @param string $tag A tag name
-     *
-     * @return Twig_TokenParserInterface|null A Twig_TokenParserInterface or null if no suitable TokenParser was found
-     */
-    public function getTokenParser($tag);
-
-    /**
-     * Calls Twig_TokenParserInterface::setParser on all parsers the implementation knows of.
-     */
-    public function setParser(Twig_ParserInterface $parser);
-
-    /**
-     * Gets the Twig_ParserInterface.
-     *
-     * @return null|Twig_ParserInterface A Twig_ParserInterface instance or null
-     */
-    public function getParser();
-}
diff --git a/inc/lib/Twig/TokenParserInterface.php b/inc/lib/Twig/TokenParserInterface.php
deleted file mode 100644
index 14acc808..00000000
--- a/inc/lib/Twig/TokenParserInterface.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Interface implemented by token parsers.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-interface Twig_TokenParserInterface
-{
-    /**
-     * Sets the parser associated with this token parser.
-     */
-    public function setParser(Twig_Parser $parser);
-
-    /**
-     * Parses a token and returns a node.
-     *
-     * @return Twig_NodeInterface
-     *
-     * @throws Twig_Error_Syntax
-     */
-    public function parse(Twig_Token $token);
-
-    /**
-     * Gets the tag name associated with this token parser.
-     *
-     * @return string The tag name
-     */
-    public function getTag();
-}
-
-class_alias('Twig_TokenParserInterface', 'Twig\TokenParser\TokenParserInterface', false);
-class_exists('Twig_Parser');
-class_exists('Twig_Token');
diff --git a/inc/lib/Twig/TokenStream.php b/inc/lib/Twig/TokenStream.php
deleted file mode 100644
index 81c043ca..00000000
--- a/inc/lib/Twig/TokenStream.php
+++ /dev/null
@@ -1,196 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- * (c) Armin Ronacher
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Represents a token stream.
- *
- * @final
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_TokenStream
-{
-    protected $tokens;
-    protected $current = 0;
-    protected $filename;
-
-    private $source;
-
-    /**
-     * @param array       $tokens An array of tokens
-     * @param string|null $name   The name of the template which tokens are associated with
-     * @param string|null $source The source code associated with the tokens
-     */
-    public function __construct(array $tokens, $name = null, $source = null)
-    {
-        if (!$name instanceof Twig_Source) {
-            if (null !== $name || null !== $source) {
-                @trigger_error(sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a Twig_Source instance instead.', __METHOD__), E_USER_DEPRECATED);
-            }
-            $this->source = new Twig_Source($source, $name);
-        } else {
-            $this->source = $name;
-        }
-
-        $this->tokens = $tokens;
-
-        // deprecated, not used anymore, to be removed in 2.0
-        $this->filename = $this->source->getName();
-    }
-
-    public function __toString()
-    {
-        return implode("\n", $this->tokens);
-    }
-
-    public function injectTokens(array $tokens)
-    {
-        $this->tokens = array_merge(array_slice($this->tokens, 0, $this->current), $tokens, array_slice($this->tokens, $this->current));
-    }
-
-    /**
-     * Sets the pointer to the next token and returns the old one.
-     *
-     * @return Twig_Token
-     */
-    public function next()
-    {
-        if (!isset($this->tokens[++$this->current])) {
-            throw new Twig_Error_Syntax('Unexpected end of template.', $this->tokens[$this->current - 1]->getLine(), $this->source);
-        }
-
-        return $this->tokens[$this->current - 1];
-    }
-
-    /**
-     * Tests a token, sets the pointer to the next one and returns it or throws a syntax error.
-     *
-     * @return Twig_Token|null The next token if the condition is true, null otherwise
-     */
-    public function nextIf($primary, $secondary = null)
-    {
-        if ($this->tokens[$this->current]->test($primary, $secondary)) {
-            return $this->next();
-        }
-    }
-
-    /**
-     * Tests a token and returns it or throws a syntax error.
-     *
-     * @return Twig_Token
-     */
-    public function expect($type, $value = null, $message = null)
-    {
-        $token = $this->tokens[$this->current];
-        if (!$token->test($type, $value)) {
-            $line = $token->getLine();
-            throw new Twig_Error_Syntax(sprintf('%sUnexpected token "%s" of value "%s" ("%s" expected%s).',
-                $message ? $message.'. ' : '',
-                Twig_Token::typeToEnglish($token->getType()), $token->getValue(),
-                Twig_Token::typeToEnglish($type), $value ? sprintf(' with value "%s"', $value) : ''),
-                $line,
-                $this->source
-            );
-        }
-        $this->next();
-
-        return $token;
-    }
-
-    /**
-     * Looks at the next token.
-     *
-     * @param int $number
-     *
-     * @return Twig_Token
-     */
-    public function look($number = 1)
-    {
-        if (!isset($this->tokens[$this->current + $number])) {
-            throw new Twig_Error_Syntax('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source);
-        }
-
-        return $this->tokens[$this->current + $number];
-    }
-
-    /**
-     * Tests the current token.
-     *
-     * @return bool
-     */
-    public function test($primary, $secondary = null)
-    {
-        return $this->tokens[$this->current]->test($primary, $secondary);
-    }
-
-    /**
-     * Checks if end of stream was reached.
-     *
-     * @return bool
-     */
-    public function isEOF()
-    {
-        return Twig_Token::EOF_TYPE === $this->tokens[$this->current]->getType();
-    }
-
-    /**
-     * @return Twig_Token
-     */
-    public function getCurrent()
-    {
-        return $this->tokens[$this->current];
-    }
-
-    /**
-     * Gets the name associated with this stream (null if not defined).
-     *
-     * @return string|null
-     *
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getFilename()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->source->getName();
-    }
-
-    /**
-     * Gets the source code associated with this stream.
-     *
-     * @return string
-     *
-     * @internal Don't use this as it might be empty depending on the environment configuration
-     *
-     * @deprecated since 1.27 (to be removed in 2.0)
-     */
-    public function getSource()
-    {
-        @trigger_error(sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);
-
-        return $this->source->getCode();
-    }
-
-    /**
-     * Gets the source associated with this stream.
-     *
-     * @return Twig_Source
-     *
-     * @internal
-     */
-    public function getSourceContext()
-    {
-        return $this->source;
-    }
-}
-
-class_alias('Twig_TokenStream', 'Twig\TokenStream', false);
diff --git a/inc/lib/Twig/Util/DeprecationCollector.php b/inc/lib/Twig/Util/DeprecationCollector.php
deleted file mode 100644
index c7bf53be..00000000
--- a/inc/lib/Twig/Util/DeprecationCollector.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
-class Twig_Util_DeprecationCollector
-{
-    private $twig;
-    private $deprecations;
-
-    public function __construct(Twig_Environment $twig)
-    {
-        $this->twig = $twig;
-    }
-
-    /**
-     * Returns deprecations for templates contained in a directory.
-     *
-     * @param string $dir A directory where templates are stored
-     * @param string $ext Limit the loaded templates by extension
-     *
-     * @return array An array of deprecations
-     */
-    public function collectDir($dir, $ext = '.twig')
-    {
-        $iterator = new RegexIterator(
-            new RecursiveIteratorIterator(
-                new RecursiveDirectoryIterator($dir), RecursiveIteratorIterator::LEAVES_ONLY
-            ), '{'.preg_quote($ext).'$}'
-        );
-
-        return $this->collect(new Twig_Util_TemplateDirIterator($iterator));
-    }
-
-    /**
-     * Returns deprecations for passed templates.
-     *
-     * @param Traversable $iterator An iterator of templates (where keys are template names and values the contents of the template)
-     *
-     * @return array An array of deprecations
-     */
-    public function collect(Traversable $iterator)
-    {
-        $this->deprecations = array();
-
-        set_error_handler(array($this, 'errorHandler'));
-
-        foreach ($iterator as $name => $contents) {
-            try {
-                $this->twig->parse($this->twig->tokenize(new Twig_Source($contents, $name)));
-            } catch (Twig_Error_Syntax $e) {
-                // ignore templates containing syntax errors
-            }
-        }
-
-        restore_error_handler();
-
-        $deprecations = $this->deprecations;
-        $this->deprecations = array();
-
-        return $deprecations;
-    }
-
-    /**
-     * @internal
-     */
-    public function errorHandler($type, $msg)
-    {
-        if (E_USER_DEPRECATED === $type) {
-            $this->deprecations[] = $msg;
-        }
-    }
-}
-
-class_alias('Twig_Util_DeprecationCollector', 'Twig\Util\DeprecationCollector', false);
diff --git a/inc/lib/Twig/Util/TemplateDirIterator.php b/inc/lib/Twig/Util/TemplateDirIterator.php
deleted file mode 100644
index c8682335..00000000
--- a/inc/lib/Twig/Util/TemplateDirIterator.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-/*
- * This file is part of Twig.
- *
- * (c) Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class Twig_Util_TemplateDirIterator extends IteratorIterator
-{
-    public function current()
-    {
-        return file_get_contents(parent::current());
-    }
-
-    public function key()
-    {
-        return (string) parent::key();
-    }
-}
-
-class_alias('Twig_Util_TemplateDirIterator', 'Twig\Util\TemplateDirIterator', false);
diff --git a/inc/lib/Twig/Extensions/Extension/I18n.php b/inc/lib/Twig/extensions/Extension/I18n.php
index bc6a05bd..bc6a05bd 100644
--- a/inc/lib/Twig/Extensions/Extension/I18n.php
+++ b/inc/lib/Twig/extensions/Extension/I18n.php
diff --git a/inc/lib/Twig/Extensions/Extension/Tinyboard.php b/inc/lib/Twig/extensions/Extension/Tinyboard.php
index 3d964c71..3d964c71 100644
--- a/inc/lib/Twig/Extensions/Extension/Tinyboard.php
+++ b/inc/lib/Twig/extensions/Extension/Tinyboard.php
diff --git a/inc/lib/Twig/Extensions/Node/Trans.php b/inc/lib/Twig/extensions/Node/Trans.php
index e7dc1ca8..e7dc1ca8 100644
--- a/inc/lib/Twig/Extensions/Node/Trans.php
+++ b/inc/lib/Twig/extensions/Node/Trans.php
diff --git a/inc/lib/Twig/Extensions/TokenParser/Trans.php b/inc/lib/Twig/extensions/TokenParser/Trans.php
index 4a0fad41..4a0fad41 100644
--- a/inc/lib/Twig/Extensions/TokenParser/Trans.php
+++ b/inc/lib/Twig/extensions/TokenParser/Trans.php