bugfix: handle exception while panning outside the Go board edges
bugfix: handle exception while panning outside the Go board edges
herzbube/littlego,herzbube/littlego,herzbube/littlego,gcao/littlego_old,puremourning/littlego,puremourning/littlego,herzbube/littlego,gcao/littlego_old,herzbube/littlego,puremourning/littlego,puremourning/littlego