Added a 'breaking' change note to a previous change entry.

Author: pspeed42

release-notes.md

@@ -3,6 +3,9 @@ Version 1.3.1 (unreleased)
 * Fixed zone ID calculation for non-uniform grids.  See PR #2.
 * Modified ZoneManager to automatically send "no-change" updates for
     objects it is managing but didn't receive updates for.  See PR #5
+    (Note: this could seem like a 'breaking change' to any apps relying
+    on objects to auto-expire in this way... just know that doing so was
+    leaving extra garbage around and so not really a solution.)
 * Added a thread-safe BufferedHashSet for creating "one writer, many readers"
     fast thread safe hash sets.
 * Added a double-buffered thread safe active IDs set to the NetworkStateListener.