Checking in changes prior to tagging of version 0.14.

Changelog diff is:

diff --git a/Changes b/Changes
index e21d8e7..3bdec02 100644
--- a/Changes
+++ b/Changes
@@ -1,7 +1,8 @@
 Revision history for Algorithm::HyperLogLog

-0.13    Sat Apr 13 20:45:00 2013
+0.14    Sat Apr 14 03:30:00 2013
         - Change required perl version
+        - Add $VERSION to Algorithm/HyperLogLog/PP.pm

 0.11    Fri Apr 05 01:40:00 2013
         - XSLoader is loaded when runtime