* refactor: improved target pointer init code and logic, added docs and runtime checks;
* game: fixed miss or wrong init calls in some continuous effects;
* game: fixed wrong usage of target pointers (miss copy code, miss npe checks);
* apply regex to change public copy constructors to protected
* cleanup code using now protected constructors
* fix manaBuilder weird casting of Mana into ConditionalMana
* replaced blocking/blocked by predicates
* added test for knight of dusk (currently fails)
* added source parameter to filters and everything else that needs it
* some changes to various predicates
* test fix
* small changes to filter code
* merge fix
* fixed a test failure
* small change to Karn, Scion of Urza
* removed sourceId from filter methods and other similar places
* added new getobject method to fix some test failures
* a few more fixes
* fixed merge conflicts
* merge fix
* refactor all instances of getRule in triggered abilities using new getTriggerPrefix method
* updated triggered ability rules generation
* renamed method
* fixed a test failure
* some more refactoring
* simplified some instances of ability word usage
