add last_response test
update META.json
update Changes
Checking in changes prior to tagging of version 0.07.

Changelog diff is:

diff --git a/Changes b/Changes
index eac7bf8..82d372e 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
 Revision history for Perl extension WebService::DMM

 {{$NEXT}}
+
+0.07 2013-05-24T14:20:59Z
        - fix 'last_response' method
          I implemented it from Web::DMM to Web::DMM::Response
        - fix for error case