* added function for casting spells with specific attributes from a selection of cards
* updated cascade to use new method
* refactored various cards to use new methods
* added TestPlayer method
* fixed a small error
* text fix
* broke out some repeated code
* added missing notTarget setting
* add additional retain zone check
* some more cards refactored
* more refactoring
* added interface for split/modal cards
* reworked spell casting methods
* reworked multiple cast to prevent unnecessary dialogs
* fixed test failures due to change in functionality
* add AI code
* small nonfunctional change
* reworked Kaya, the Inexorable
* added currently failing test
* added more tests
* updated Geode Golem implementation
* fixed adventure/cascade interaction, added/updated tests
* some nonfunctional refactoring
* added interface for subcards
* [AFC] Implemented Fevered Suspicion
* [AFC] Implemented Extract Brain
* [AFC] updated Arcane Endeavor implementation
* [C17] reworked implementation of Izzet Chemister
* [ZEN] reworked implemented of Chandra Ablaze
* additional merge fix
* [SLD] updated Eleven, the Mage
* [NEO] Implemented Discover the Impossible
* [NEO] Implemented The Dragon-Kami Reborn / Dragon-Kami's Egg
* [NEO] Implemented Invoke Calamity
* [AFR] Implemented Rod of Absorption
* [VOC] Implemented Spectral Arcanist
* [VOC] added additional printings
* [NEO] added all variants
* [SLD] updated implementation of Ken, Burning Brawler
