Fix out-of-bounds dragging in direct_select; closes #461
Fix out-of-bounds dragging in direct_select; closes #461

kiRach/mapbox-gl-draw,mapbox/mapbox-gl-draw,kiRach/mapbox-gl-draw,mapbox/mapbox-gl-draw,mapbox/gl-draw,drewbo/mapbox-gl-draw,drewbo/mapbox-gl-draw,mapbox/gl-draw