Added functionality to request single sign out
Added a test for Cassy::TicketGrantingTicket#destroy_and_logout_all_service_tickets
Merge branch 'master' of github.com:reInteractive/cassy
Restored the 'render :new' line after logging in with no @service_with_ticket (which should be handled by the default_redirect_url)
Added 'no_concurrent_sessions' option
Refactored the logout notifications
Cleaning up refactoring of single sign out
Refactoring after adding single_sign_out and no_concurrent_sessions
Added a spec related to single sign out
Bumped version
Merge pull request #23 from geoffroh/master

Single sign out