Checking in changes prior to tagging of version 0.24.

Changelog diff is:

diff --git Changes Changes
index 4fcfd1e..caeb225 100644
--- Changes
+++ Changes
@@ -2,6 +2,11 @@ Revision history for Perl module Test::SharedFork

 {{$NEXT}}

+0.24 2014-04-07T21:21:56Z
+
+    - Cygwin 64-bit - allow tests to pass
+      (rwhitworth)
+
 0.23 2014-03-12T20:12:11Z

     - 06_fail_lineno.t fails on Windows due to path separator #9