Optimize mandelbrot_double updates
Optimize mandelbrot_double updates

RebeccaWPerry/vispy,QuLogic/vispy,bollu/vispy,srinathv/vispy,inclement/vispy,QuLogic/vispy,kkuunnddaannkk/vispy,kkuunnddaannkk/vispy,srinathv/vispy,michaelaye/vispy,drufat/vispy,drufat/vispy,michaelaye/vispy,hronoses/vispy,jdreaver/vispy,julienr/vispy,sh4wn/vispy,sh4wn/vispy,Eric89GXL/vispy,bollu/vispy,hronoses/vispy,RebeccaWPerry/vispy,kkuunnddaannkk/vispy,dchilds7/Deysha-Star-Formation,jay3sh/vispy,julienr/vispy,ghisvail/vispy,jdreaver/vispy,michaelaye/vispy,jdreaver/vispy,sbtlaarzc/vispy,srinathv/vispy,jay3sh/vispy,inclement/vispy,hronoses/vispy,dchilds7/Deysha-Star-Formation,jay3sh/vispy,bollu/vispy,Eric89GXL/vispy,dchilds7/Deysha-Star-Formation,inclement/vispy,ghisvail/vispy,ghisvail/vispy,QuLogic/vispy,sbtlaarzc/vispy,Eric89GXL/vispy,sbtlaarzc/vispy,drufat/vispy,sh4wn/vispy,RebeccaWPerry/vispy,julienr/vispy