put in GetEnumerator so it can look more like a list.
put in GetEnumerator so it can look more like a list.

LayoutFarm/PixelFarm,MatterHackers/agg-sharp,mmoening/agg-sharp,mmoening/agg-sharp,larsbrubaker/agg-sharp,mmoening/agg-sharp,jlewin/agg-sharp