Upgrading to 1.2b30, which consolidates group membership addition to contact::group::add_member and changes the UseSubsiteAsDefaultGroup default to "1" - included is an upgrade script to move all users of a contacts application group to their respective subsite application group since the previous sweeper method was error prone.
Adding ability to map dotlrn communities to contacts, email groups with one button on the front page, select groups from a drop down on the front page and fixing some bugs