Crowned pieces are now displayed
Added simple computer strategy. Allowed free movement
Fixed 2 bugs for crowned pieces, added tests
Simple minimax strategy
Fixed a big with estimates in minimax
Optimized IA when there is only one move available
Fixed available moves of a crowned piece in case of capture sequences. Added a failing test for a crowned piece for another case.
Captured pieces are now transparent before they are removed. Added more tests for capturing.