1.2.1 ENH: Added a DatabaseState to handle maintenance windows via database.
1.2.0 ENH: Added a RouteFilter, as a recommend replacement for an URIFilter (URIFilter mark as deprecated).
1.1.0 ENH: added commands\MaintenanceController.php ENH: use a more obtrusive default file name in states/FileState.php
1.0.0 initial stable release