Added note about changes in pbx_lua's behavior when applications do dialplan jumps

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@317802 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -42,5 +42,11 @@ chan_dahdi:
  - The mohinterpret=passthrough setting is deprecated in favor of
    moh_signaling=notify.
 
+pbx_lua:
+ - Execution no longer continues after applications that do dialplan jumps
+   (such as app.goto).  Now when an application such as app.goto() is called,
+   control is returned back to the pbx engine and the current extension
+   function stops executing.
+
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