Added CHANGELOG for zendframework#198

Author: weierophinney

CHANGELOG.md

@@ -2,11 +2,14 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 3.0.3 - TBD
+## 3.0.3 - 2016-08-29
 
 ### Added
 
-- Nothing.
+- [#198](https://github.com/zendframework/zend-mvc/pull/198) adds a factory for
+  the `SendResponseListener`, to ensure that it is injected with an event
+  manager instance from the outset; this fixes issues with delegator factories
+  that registered listeners with it in previous versions.
 
 ### Deprecated