* refactored createCopyOnStack to be void
* added new interface for modifying copied spellsspells
* update implementation of Fork to use new applier
* reworked epic effect
* add applier to spell copy code
* updated implementation of Beamsplitter Mage
* updated cards which copy for each possible target
* added support for additional copies having targets changed
* fixed/ignored failing tests
* updated target changing to prevent unnecessary choosing
* added test for Twinning Staff
* updated implementation of spell copy applier
* added new method for choosing order of copies on stack
* fixed test failures
* [TSR] various text fixes
* fixed a test failure
* [SLD] fixed Rick, Steadfast Leader only counting Human creatures
* updated test framework to handle skips without affecting starting player choice
* fixed another test failure
* updated copy messaging for consistency
* added copy messaging to stack abilities
