fix for possible crash: invoke UIKit method setEditing:animated: in main thread
fix for possible crash: invoke UIKit method setEditing:animated: in main thread

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