* updated commander zone change rules
* moved commander tracking into game state
* fixed a zone change error
* fixed some more tests for new commander rule
* updated variable names
* updated a test name
- Simplified and fixed some problems of the handling of the "Until end of your next turn" duration.
- Fixed that some continous effects changed controller but shouldn't dependant from their duration type. Controller chnage will now done duration type dependant.
(that change fixes#6581 in a more general way undoing the effect specific changes of 2e8ece1dbd).
* Now human player uses same code for playable abilities search as test framework (old version used different code, so it could not work in one of the modes);
* Split cards - improves playable highlights;
* Split cards - fixed that it doesn't work with dynamic added abilities like flashback (#6327, #6470, #6549);
* added new discard method
* started refactoring to use new discard method
* refactored A through I
* fixed some issues
* separated balance effect into its own class
* refactored J through R
* refactored S through Z
* applied requested changes
* updated implementation of Unpredictable Cyclone, refactored drawCard method
* fixed another small implementation error
* added test for Unpredictable Cyclone
* updated Unpredictable Cyclone test
* 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);
* Game: added multiple cards/effects support (old version supported only 1 effect per game);
* Game: added combo support with split and adventure cards;
* AI: computer can see and play cards with dynamic added alternative cost (like Bolas's Citadel);
* UI: users can see playable cards with alternative cost.
* Game: improved asThough effects processing and combo with different cards/abilities (e.g. adventure cards, play from non own hand, etc);
* AI: computer can see and play non hand cards with dynamic effects in all zones (not only graveyard);
* AI: computer can see and play "as though" mana and alternative costs;
* UI: added non hand cards highlights of available abilities/cards;
