added entry for ZRoundup commit

Author: Derrick Hudson

CHANGES.txt

@@ -40,6 +40,7 @@ Feature:
    - also changed cgi client since it was duplicating the functionality
 
 Fixed:
+ . #562130 ] cookie path generated from ZRoundup was wrong in some situations
  . stop sending blank (whitespace-only) notes
  . cleanup of serialisation for database storage
  . node ids are now generated from a lockable store - no more race conditions