Release v5.1.1
* Fix: repair 'Opt In' default list drop down on options page
* Fix: repair errors being thrown when a commenter is added to a list

git-svn-id: https://plugins.svn.wordpress.org/yikes-inc-easy-mailchimp-extender/trunk@1020505 b8457f37-d9ea-0310-8a92-e5e31aec5664