Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 7fec681..04d11f7 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Plack::Middleware::Expires

 {{$NEXT}}

+0.04 2013-08-23T05:55:00Z
+
+        - requires 'HTTP::Date' and 'HTTP::Status'. no requires LWP
+        - minil migrate
+
 0.03    Thu Nov 11 11:11:11 2010
         - remove time sensitive Expires header tests