update CHANGES to reflect the addition of the test framework

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@236028 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

@@ -361,6 +361,8 @@ Security Events Framework
 
 Miscellaneous
 -------------
+ * Addition of the Unit Test Framework API for managing registration and execution
+   of unit tests with the purpose of verifying the operation of C functions.
  * SendText is now implemented in chan_gtalk and chan_jingle. It will simply send
    XMPP text messages to the remote JID.
  * Modules.conf has a new option - "require" - that marks a module as critical for