releasing 1.6.6

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@1016279 b8457f37-d9ea-0310-8a92-e5e31aec5664
prepping 1.6.7

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@1016281 b8457f37-d9ea-0310-8a92-e5e31aec5664