Update Elastica dependency

Author: merk

composer.json

@@ -17,7 +17,7 @@
         "symfony/console": "~2.1",
         "symfony/form": "~2.1",
         "symfony/property-access": "~2.2",
-        "ruflin/elastica": ">=0.90.10.0, <1.4-dev",
+        "ruflin/elastica": ">=0.90.10.0, <1.5-dev",
         "psr/log": "~1.0"
     },
     "require-dev":{