* Create default overrides class and export that with custom overrides
* add comment to mock import and replace typecast with type narrowing
* change modifier override type to pick keys from modifierTypes
* Removes firstHitOnly from AddArenaTagAttr to allow multi hit set up with ceaseless edge
* Creates initial test file with basic cases for ceaseless edge
* Fixes ceaseless edge unit test and expands on case 3
* Adds truthy/falsy expectations prior to use
