Release of version 0.4.0

Author: khelle

composer.json

@@ -15,7 +15,7 @@
     }],
     "require": {
         "php": ">=5.5.9",
-        "kraken-php/util": "0.3.*"
+        "kraken-php/util": "0.4.*"
     },
     "suggest": {
         "ext-libevent": ">=0.1.0",
@@ -29,7 +29,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "0.4-dev"
+            "dev-master": "0.5-dev"
         }
     },
     "minimum-stability": "dev",