makeMove with fedback about success or fail

[dkwach]

In current version makeMove methods doesn't return anything.

It could be useful to propagate information from game.move to the caller if move was accepted or rejected. Use cases:

• info for user that move was rejected on some status bar or other widget
• chess engine development when engine is providing incorrect move

Instead return bool, raising some exception will be also good (However I would recommend to keep chess.move consistency )