Update the 'make moves' function to detect threefolds

[johndoknjas]

Currently, if the make_moves_from_current_position function is called with this:

sf.make_moves_from_current_position( ["g1f3", "g8f6", "f3g1", "f6g8", "g1f3", "g8f6", "f3g1", "f6g8", "g1f3", "g8f6", "f3g1", "f6g8", "g1f3"] )

Stockfish's evaluation will still favour White slightly (just as if it were evaluating the position after 1.Nf3), despite the fact that Black can draw by threefold with ...Nf6 here. This is because in make_moves_from_current_position, the moves are not all made together in one command, but rather in a loop with a new position fen... command each time.

Also, if there's a way to detect threefolds even after multiple calls to make_moves_from_current_position, that would be nice. But this would likely require move history.