* simulated games was able to change objects from another games (ConcurrentModificationException, related to d202278ccd, details in 3a6cdd2615);
* AI: fixed cards disappear in multiplayer games with computer (details in #6738);
* updated implementation of Unpredictable Cyclone, refactored drawCard method
* fixed another small implementation error
* added test for Unpredictable Cyclone
* updated Unpredictable Cyclone test
"b" + "r" now changed to 'b' + 'w'. It's more straight-forward, and may cause perfomance improvements - character primitives allocation is faster and less expensive than string creation.
