Added default _transform operator
Added default _transform operator

grlee77/scipy,e-q/scipy,aarchiba/scipy,endolith/scipy,person142/scipy,endolith/scipy,Stefan-Endres/scipy,rgommers/scipy,vigna/scipy,grlee77/scipy,rgommers/scipy,matthew-brett/scipy,person142/scipy,lhilt/scipy,rgommers/scipy,zerothi/scipy,aeklant/scipy,vigna/scipy,perimosocordiae/scipy,tylerjereddy/scipy,zerothi/scipy,nmayorov/scipy,Eric89GXL/scipy,anntzer/scipy,matthew-brett/scipy,mdhaber/scipy,aeklant/scipy,perimosocordiae/scipy,mdhaber/scipy,lhilt/scipy,ilayn/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,Eric89GXL/scipy,Eric89GXL/scipy,mdhaber/scipy,Stefan-Endres/scipy,gertingold/scipy,scipy/scipy,jamestwebber/scipy,WarrenWeckesser/scipy,arokem/scipy,scipy/scipy,perimosocordiae/scipy,nmayorov/scipy,Eric89GXL/scipy,andyfaff/scipy,andyfaff/scipy,arokem/scipy,andyfaff/scipy,anntzer/scipy,andyfaff/scipy,lhilt/scipy,arokem/scipy,rgommers/scipy,pizzathief/scipy,e-q/scipy,vigna/scipy,lhilt/scipy,aarchiba/scipy,WarrenWeckesser/scipy,jamestwebber/scipy,mdhaber/scipy,perimosocordiae/scipy,zerothi/scipy,jamestwebber/scipy,jamestwebber/scipy,rgommers/scipy,grlee77/scipy,Eric89GXL/scipy,aeklant/scipy,anntzer/scipy,scipy/scipy,Stefan-Endres/scipy,anntzer/scipy,ilayn/scipy,scipy/scipy,zerothi/scipy,jor-/scipy,WarrenWeckesser/scipy,tylerjereddy/scipy,jor-/scipy,gertingold/scipy,grlee77/scipy,anntzer/scipy,arokem/scipy,gertingold/scipy,ilayn/scipy,e-q/scipy,jamestwebber/scipy,Stefan-Endres/scipy,nmayorov/scipy,jor-/scipy,perimosocordiae/scipy,aarchiba/scipy,pizzathief/scipy,WarrenWeckesser/scipy,jor-/scipy,endolith/scipy,endolith/scipy,aarchiba/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,endolith/scipy,lhilt/scipy,andyfaff/scipy,grlee77/scipy,andyfaff/scipy,vigna/scipy,gertingold/scipy,arokem/scipy,ilayn/scipy,pizzathief/scipy,person142/scipy,nmayorov/scipy,endolith/scipy,nmayorov/scipy,pizzathief/scipy,ilayn/scipy,e-q/scipy,zerothi/scipy,pizzathief/scipy,mdhaber/scipy,vigna/scipy,jor-/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,mdhaber/scipy,scipy/scipy,gertingold/scipy,matthew-brett/scipy,aarchiba/scipy,Eric89GXL/scipy,person142/scipy,e-q/scipy,aeklant/scipy,ilayn/scipy,person142/scipy,aeklant/scipy,tylerjereddy/scipy,scipy/scipy,tylerjereddy/scipy,zerothi/scipy,anntzer/scipy,tylerjereddy/scipy,matthew-brett/scipy