Added the ability to invert the y lookup table (the old flipy behavior)
Added the ability to invert the y lookup table (the old flipy behavior)

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