Use v0.7 releases of erusev/parsedown-extra

composer.json

@@ -14,7 +14,7 @@
     "require": {
         "php": ">=5.3.2",
         "twig/twig": "1.18.*",
-        "erusev/parsedown-extra": "dev-master@dev",
+        "erusev/parsedown-extra": "0.7.*",
         "symfony/yaml" : "2.3"
     },
     "autoload": {