releasing 1.6.0

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@993029 b8457f37-d9ea-0310-8a92-e5e31aec5664
prepping 1.6.1

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@993033 b8457f37-d9ea-0310-8a92-e5e31aec5664
standardize spelling of email

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@993037 b8457f37-d9ea-0310-8a92-e5e31aec5664