Forward compatibility with EventLoop v1.0 and v0.5

Author: clue

composer.json

@@ -16,7 +16,7 @@
     "require": {
         "php": ">=5.3",
         "evenement/evenement": "^3.0 || ^2.0 || ^1.0",
-        "react/event-loop": ">=0.2, <0.5",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3 || ^0.2",
         "react/dns": ">=0.2, <0.5",
         "react/promise": "~2.1|~1.2"
     },