Face down changes:
* GUI: added visible face down type and real card name for controller/owner (opponent can see it after game ends);
* GUI: added day/night button to view real card for controller/owner (opponent can see it after game ends);
* game: fixed that faced-down card can render symbols, abilities and other hidden data from a real card;
* images: added image support for normal faced-down cards;
* images: added image support for morph and megamorph faced-down cards;
* images: added image support for foretell faced-down cards;
Other changes:
* images: fixed missing tokens from DDD set;
* images: no more client restart to apply newly downloaded images or render settings;
* images: improved backface image quality (use main menu -> symbols to download it);
* Move Cultivate search effect to common class
* [MKM] Implement Flourishing Bloom-Kin
* Use TargetCardInLibrary, minor changes to improve readability
* Announce cards going to hand
* 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);
* [MKC] Implement Trouble in Pairs
* Delete DrawCardWatcher, use preexisting common watcher
* Fix some unrelated cards' rarities to fix verify
* Implement common turn skipping ability
tests: fixed wrong permanent structure for battlefield cards (addCard command);
tests: added docs and additional runtime checks;
game: Modal double-faced cards - improved support, no more other side effects on battlefield;
game: Copy abilities - improved stability and cards support;
game: Player under control - improved stability and related cards support (possible NPE errors, additional runtime checks);
server: fixed bloated logs with game timer;
AI: fixed wrong timer in computer games;
* make inner class static
* rework to remove inner class
* static filter cleanup
* ManaCostsImpl<>
* fix copy constructor
* new TargetPlayerGainControlTargetPermanentEffect
* make some inner classes no longer inner classes
