update casper; ignore uint8clampedarray
update casper; ignore uint8clampedarray

ursudio/webgl-heatmap-leaflet,ursudio/leaflet-webgl-heatmap,ursudio/webgl-heatmap-leaflet,ursudio/leaflet-webgl-heatmap,ursudio/webgl-heatmap-leaflet,ursudio/leaflet-webgl-heatmap