Checking in changes prior to tagging of version 0.12.

Checking in changes prior to tagging of version 0.12.

Changelog diff is:

diff --git a/Changes b/Changes
index 1e3c6bc..53f99b6 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Perl extension Plack::Middleware::Session

+0.12 Wed Jul  7 15:54:05 PDT 2010
+    - Improved documents (markstos, haarg)
+    - Support httponly option (haarg)
+
 0.11 Sat Feb 27 02:40:29 PST 2010
     - Added Session::Store::DBI by lestrrat