Checking in changes prior to tagging of version 0.03.

Changelog diff is:

diff --git a/Changes b/Changes
index bcdca80..6a0623a 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Net-Groonga-HTTP

 {{$NEXT}}

+0.03 2013-04-25T23:18:41Z
+
+    - Added column_create, dump.
+    - Added test cases.
+
 0.02 2013-04-25T08:05:35Z

     - Documentation enhancements.