added a note on Toshio change. Fixes #171 (with r734)

--HG--
branch : distribute
extra : rebase_source : 10d46a506636fd2fbf1ec9bbbdf55ec9909e5e8e

CHANGES.txt

@@ -6,7 +6,8 @@ CHANGES
 0.6.14
 ------
 
-* Issue 170: fixed unittest failure. Thanks to Toshio.
+* Issue 170: Fixed unittest failure. Thanks to Toshio.
+* Issue 171: Fixed race condition in unittests cause deadlocks in test suite.
 
 ------
 0.6.13