CHANGES.md in celluloid-supervision-0.20.0 vs CHANGES.md in celluloid-supervision-0.20.1

@@ -1,11 +1,23 @@
+0.20.1 (2015-08-06)
+-----
+* Fixed arity checking
+* Added usage examples to README
+* Change reference to `Actor::System` ( was `ActorSystem` )
+
+0.20.0 (2015-07-04)
+-----
+* Extracted from Celluloid
+* Re-added Supervision Trees
+* Added Configuration object
+* Added injections and behaviors
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