Checking in changes prior to tagging of version 0.16.

Changelog diff is:

diff --git a/Changes b/Changes
index 0f1350c..bd0d876 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Ukigumo::Client

 {{$NEXT}}

+0.16 2013-04-13T10:16:34Z
+
+    - Add Notify::Growl
+    - Switch to Minilla from M::B
+
 0.15 2013-03-11T19:01:27

     - Switch to Module::Build