Checking in changes prior to tagging of version 0.47.

Changelog diff is:

diff --git a/Changes b/Changes
index 0f3c201..8b95d0e 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Perl extension CGI::Header.

+0.47  Apr 12th, 2013
+
   - Remove handler() and add redirect() instead
   - Rename cookie() to cookies() since the "cookie" property can be an
     arrayref