allow semantic twig extension versions

Author: Tobion

composer.json

@@ -11,7 +11,7 @@
         "symfony/symfony": "2.3.*",
         "doctrine/orm": "^2.4.8",
         "doctrine/doctrine-bundle": "~1.2",
-        "twig/extensions": "1.0.*",
+        "twig/extensions": "~1.0",
         "symfony/assetic-bundle": "~2.3",
         "symfony/swiftmailer-bundle": "~2.3",
         "symfony/monolog-bundle": "~2.4",