Add promise-rejection to CHANGELOG

Author: igorw

CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 * 1.0.4 (201x-xx-xx)
 
   * Trigger PHP errors when invalid callback is passed.
+  * Fully resolve rejection value before calling rejection handler.
 
 * 1.0.3 (2012-11-17)