* Implement Costs Tag Map system
* Use Costs Tag Map system to store X value for spells, abilities, and resolving permanents
* Store Bestow without target's tags
Change functions for getting tags and storing the tags of a new permanent
* Create and use deep copy function in CardUtil, add Copyable<T> to many classes
* Fix Hall Of the Bandit Lord infinite loop
* Add additional comments
* Don't store null/empty costs tags maps (saves memory)
* Fix two more Watchers with Ability variable
* Add check for exact collection types during deep copy
* Use generics instead of pure type erasure during deep copy
* convert more code to using deep copy helper, everything use Object copier, add EnumMap
* fix documentation
* Don't need the separate null checks anymore (handled in deepCopyObject)
* Minor cleanup
* apply regex to change public copy constructors to protected
* cleanup code using now protected constructors
* fix manaBuilder weird casting of Mana into ConditionalMana
* 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>