Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 2a3db72..fae1348 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Perl extension Time::Piece::Plus

+0.04    Tue Mar 13 17:05:12 2013
+        - fix epoch bug
+
 0.03    Wed Feb 13 06:05:00 2013
         - override add/subtract method for providing interface like DateTime