fix: stoneDistanceFromFingertip calculation no longer depends on GoGame
fix: stoneDistanceFromFingertip calculation no longer depends on GoGame

puremourning/littlego,herzbube/littlego,puremourning/littlego,puremourning/littlego,herzbube/littlego,herzbube/littlego,herzbube/littlego,herzbube/littlego,puremourning/littlego