Update Twig. This closes #295

inc/lib/Twig/Node/Expression.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (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.
@@ -18,3 +18,5 @@
 abstract class Twig_Node_Expression extends Twig_Node
 {
 }
+
+class_alias('Twig_Node_Expression', 'Twig\Node\Expression\AbstractExpression', false);