Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 4345b0d..f0fea47 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Perl extension AnyEvent::Lingr

+0.04 2013-03-18T09:14:00+09:00
+     - added a missing prereq.
+
 0.03 2013-03-18T09:09:00+09:00
      - added a callback for say method for getting API response. (xaicron)
      - fixed some debug messages