* [KHM] fixed that some effects can't find mdf commanders on battlefield (example: Fierce Guardianship, #7504);
* Oathbreaker: fixed that some cards that refer to commander can affects signature spells too;
* 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>
* updated Changelings to use setIsAllCreatureTypes
* updated Dr Julius Jumblemorph and Mistform Ultimus to not use changeling
* added test for Mistform Ultimus
* updated effects which give all creature types to controlled creatures
* updated effects which give all creature types to targeted creatures
* Update LoseAllCreatureTypesTargetEffect.java
* updated effects which give all creature types to attached creatures
* Update EgoErasure.java
* added another test for changelings
* updated two tokens I left out before
* updated hasSubtype
* updated shareCreatureTypes
* fixed an incorrect test
* cleaned up some cards which check for shared creature types
* added new changeling test
* fixed issue with shareCreatureTypes
* fixed a text issue
* added new tests for subtype effects
* various individual card fixes and cleanups
* fixed and updated various effects
* many more fixes
* a few more fixes
* added test for One with the Stars
* added changeling verify test
* updated effects which add additional subtypes
* more miscellaneous fixes
* added additional test
* some fixes for card type checks
* updated methods for adding types to make it easier to avoid duplicates and illegal additions
* small test update
* fixed a recursive loop issue
* fixed another error
* fixed it for real this time
* streamlined type removal process
* streamlined subtype set generation
fixed ignoring allFromOneOpponent in canChoose
fixed including own graveyard in canChoose
fixed including own graveyard for possibleTargets
fixed not overriding one canTarget at all which allowed targeting cards in different graveyards
should also fix#6472
* Added support of spell ability choice in free cast (chooseSpellAbilityForCast);
* Added support of "up to" targets setup in addTargetAmount (use TestPlayer.TARGET_SKIP to stop target choose);
* Restored multiple checks for addTargetAmount;
* Fixed many wrong tests (wrong order or missing commands);
