AUI-998 - cssClass attribute can be passed into Tooltip Delegate
AUI-998 - Adding tests
AUI-998 - Source formatting
AUI-1205 - datePicker fires selectionChange event when trigger is clicked
AUI-1205 - add unit tests
AUI-1205 - Source formatting
AUI-1205 Source formatting
AUI-1654 Custom form validator rules should be easier to find and define

* New attribute customRules added to make it easier to add new rules for the form validator.
* Custom rules are not added to a singular instance, but all instances of the validator.
* Use static function on FormValidator to add these rules.
* Update demo to show changes.
AUI-1654 Add unit tests for custom rules API
AUI-1654 - Source formatting
AUI-1654 Source formatting
AUI-1640 Scheduler should create SchedulerEvent instances lazily
AUI-1771 Display all events in scheduler's month view
AUI-1781 - Radio field is being automatically selected after it's dragged and dropped in the Form Builder. Beyond that, there is a documentation fix too.
AUI-1781 Source formatting
AUI-1589 -  extend aui-aria plugin with TableSortable class
AUI-1589 - use case - datatable demo
AUI-1589 - source formatting
AUI-1589 - improve captionVisibleChange logic
AUI-1589 - update HISTORY.md