add get_or_set
sanitize get_or_set key
Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 7c0c1ca..3927855 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension Cache::Memcached::Fast::Safe

 {{$NEXT}}

+0.04 2013-10-16T04:47:07Z
+
+        - add get_or_set
+
 0.03 2013-08-22T08:17:25Z
         - [important] fixed connection leak
         - minil migrate