buffer mouse moves when dragging so as not to outpace GTK
buffer mouse moves when dragging so as not to outpace GTK

walterbender/turtleconfusion,walterbender/turtleflags,AlanJAS/turtleart,walterbender/turtleartmini,walterbender/turtle3D,walterbender/AmazonasTortuga,walterbender/turtleart