board::do_move_experimental not fully working
cleaned code, removed useless MPI folder
board::do_move_experimental() fully working, not optimized yet
improved board::do_move_experimental(), still 15 times as slow as board::do_move()
fixed bug in game_control::remove_bot()
added bot_ali::negamax_max_non_empty fields, to reduce bot_ali::negamax() param count to two