Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 1ef4311..73654d3 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,13 @@ Revision history for Perl extension Test-Power

 {{$NEXT}}

+0.04 2013-09-14T03:44:48Z
+
+    - Use B::Tap!
+      (tokuhirom)
+    - Support ithreads!
+      (tokuhirom)
+
 0.03 2013-09-12T21:02:28Z

     - use B::GVOP for generating OP_GV. It makes more portable.