use Test::Output
Checking in changes prior to tagging of version 0.56.

Changelog diff is:

diff --git a/Changes b/Changes
index 363ab1b..ad9b2a2 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Perl extension CGI::Header.

+0.56 (1.00-RC9) May 31st, 2013
+
   - finalize() prints to STDOUT using CGI#print

   [ROADMAP]