Removed direct support for GroupManager, since a recent release of it broke integration and was resulting in a fatal error; as long as you're using its Permissions bridge, it should continue to work fine for you even with direct support removed
Debug output (if debug mode is enabled) for border crossings now indicates the world name.
When enabling/disabling "whoosh" effect (via /wb whoosh), it was incorrectly indicating whether it was enabled/disabled; fixed
