Cleaned up display a bit ... if you say "groupsize is 10" you now seea groupsize of 10 displayed not 11. If groupsize is 1 you only get next/prevpage nav widgets rather than both page and group nav widgets.
Call to workflow::case::state_changed_handler must come before workflow::case::action::notify, otherwise assignees arent't created yet when notifications go out, which causes the notification to be sent to everyone