Checking in changes prior to tagging of version v0.0.15.

Changelog diff is:

diff --git a/Changes b/Changes
index 77ad25b..bf05025 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension Ukigumo::Agent

 {{$NEXT}}

+v0.0.15 2014-03-17T15:32:32Z
+
+    - Update a dependency to Ukigumo::Client (bug fix)
+
 v0.0.14 2014-03-17T04:04:21Z

     - Fix META