--- Coro/Changes	2014/06/02 18:32:31	1.633
+++ Coro/Changes	2014/08/13 03:09:53	1.634
@@ -8,6 +8,9 @@
 TODO: croak when async_pool triesd to runc anceled thread?
 
 	- restore portability to perl 5.8.x.
+        - allow zero as agrument to Coro::Channel to mean the same thing
+          as no argument. this works with older versions as well,
+          but wasn't legal until now.
 
 6.39 Mon Jun  2 00:00:08 CEST 2014
 	- work around more incompatible changes in 5.20.