Added decorator.py to flake8 test exclusion list
Added decorator.py to flake8 test exclusion list

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