* refactor check supertype methods
* change supertype to list to match card type
* refactor various subtype methods
* implement mageobjectattribute for supertype
* a few fixes
* [BRC] Implement Rootpath Purifier
* a few extra fixes
* more fixes
* add test for purifier
* removed and renamed SubTypeList
* updated subtype test
* refactored Changeling to be an ability that actually does something
* moved isAllCreatureTypes into SubTypes class
* renamed copyTo method to copyFrom
* added removeAllCreatureTypes where usable
* replaced some subtype methods
* replaced some more subtype methods
* replaced subtype mass add/remove methods
* updated more subtype methods
* fixed some errors
* made common shared creature type predicate
* refactored another card involving subtypes
* Added usage of object attribute in subTypes's write operations;
* Refactor: use same param styles in subtype methods
* Refactor: simplified usage of copy appliers;
* Refactor: fixed code usage in CopyApplier
Co-authored-by: Oleg Agafonov <jaydi85@gmail.com>
