release 0.5.0

Author: Caolan McMahon

package.json

@@ -3,7 +3,7 @@
     "description": "Higher-order functions and common patterns for asynchronous code",
     "main": "./lib/async",
     "author": "Caolan McMahon",
-    "version": "0.4.1",
+    "version": "0.5.0",
     "repository" : {
         "type" : "git",
         "url" : "https://github.com/caolan/async.git"