Allow doctrine/event-manager 2

Author: franmomu

composer.json

@@ -27,7 +27,7 @@
         "doctrine/annotations": "^1.12",
         "doctrine/cache": "^1.11 || ^2.0",
         "doctrine/collections": "^1.5 || ^2.0",
-        "doctrine/event-manager": "^1.0",
+        "doctrine/event-manager": "^1.0 || ^2.0",
         "doctrine/instantiator": "^1.1",
         "doctrine/persistence": "^2.4 || ^3.0",
         "friendsofphp/proxy-manager-lts": "^1.0",