Fix-up issubdtype to be more useful
Fix-up issubdtype to be more useful

tynn/numpy,sinhrks/numpy,CMartelLML/numpy,ekalosak/numpy,pelson/numpy,empeeu/numpy,pizzathief/numpy,yiakwy/numpy,astrofrog/numpy,embray/numpy,utke1/numpy,SiccarPoint/numpy,anntzer/numpy,mathdd/numpy,rgommers/numpy,embray/numpy,felipebetancur/numpy,cjermain/numpy,rudimeier/numpy,GrimDerp/numpy,jorisvandenbossche/numpy,tdsmith/numpy,seberg/numpy,jschueller/numpy,pdebuyl/numpy,ewmoore/numpy,MichaelAquilina/numpy,WillieMaddox/numpy,sonnyhu/numpy,dimasad/numpy,anntzer/numpy,utke1/numpy,dato-code/numpy,jakirkham/numpy,WillieMaddox/numpy,madphysicist/numpy,SunghanKim/numpy,Anwesh43/numpy,KaelChen/numpy,githubmlai/numpy,WarrenWeckesser/numpy,kiwifb/numpy,mindw/numpy,pizzathief/numpy,Linkid/numpy,empeeu/numpy,SiccarPoint/numpy,tdsmith/numpy,MSeifert04/numpy,numpy/numpy-refactor,cjermain/numpy,sigma-random/numpy,ssanderson/numpy,leifdenby/numpy,Srisai85/numpy,ewmoore/numpy,rajathkumarmp/numpy,mathdd/numpy,mortada/numpy,seberg/numpy,argriffing/numpy,maniteja123/numpy,githubmlai/numpy,SiccarPoint/numpy,stuarteberg/numpy,mattip/numpy,tacaswell/numpy,numpy/numpy-refactor,skymanaditya1/numpy,ChristopherHogan/numpy,behzadnouri/numpy,Dapid/numpy,felipebetancur/numpy,rhythmsosad/numpy,MichaelAquilina/numpy,pdebuyl/numpy,trankmichael/numpy,ajdawson/numpy,embray/numpy,rherault-insa/numpy,grlee77/numpy,embray/numpy,GrimDerp/numpy,larsmans/numpy,seberg/numpy,kiwifb/numpy,larsmans/numpy,charris/numpy,ogrisel/numpy,bringingheavendown/numpy,ChanderG/numpy,immerrr/numpy,mindw/numpy,grlee77/numpy,trankmichael/numpy,dch312/numpy,rgommers/numpy,jankoslavic/numpy,NextThought/pypy-numpy,kirillzhuravlev/numpy,rajathkumarmp/numpy,numpy/numpy-refactor,rajathkumarmp/numpy,madphysicist/numpy,Anwesh43/numpy,utke1/numpy,stuarteberg/numpy,andsor/numpy,argriffing/numpy,yiakwy/numpy,yiakwy/numpy,hainm/numpy,ChanderG/numpy,ogrisel/numpy,ddasilva/numpy,musically-ut/numpy,gfyoung/numpy,rmcgibbo/numpy,rherault-insa/numpy,rherault-insa/numpy,NextThought/pypy-numpy,jakirkham/numpy,mhvk/numpy,mortada/numpy,felipebetancur/numpy,bmorris3/numpy,BabeNovelty/numpy,endolith/numpy,GaZ3ll3/numpy,skwbc/numpy,pdebuyl/numpy,mhvk/numpy,AustereCuriosity/numpy,naritta/numpy,Srisai85/numpy,has2k1/numpy,stefanv/numpy,pelson/numpy,musically-ut/numpy,endolith/numpy,SunghanKim/numpy,gmcastil/numpy,ahaldane/numpy,leifdenby/numpy,mwiebe/numpy,musically-ut/numpy,bmorris3/numpy,numpy/numpy,kirillzhuravlev/numpy,pbrod/numpy,stuarteberg/numpy,WarrenWeckesser/numpy,charris/numpy,bmorris3/numpy,stefanv/numpy,dwf/numpy,mingwpy/numpy,skwbc/numpy,rudimeier/numpy,dwf/numpy,ahaldane/numpy,pbrod/numpy,maniteja123/numpy,bmorris3/numpy,KaelChen/numpy,bringingheavendown/numpy,matthew-brett/numpy,skwbc/numpy,jschueller/numpy,dwf/numpy,ContinuumIO/numpy,stuarteberg/numpy,chatcannon/numpy,simongibbons/numpy,behzadnouri/numpy,jankoslavic/numpy,numpy/numpy-refactor,WarrenWeckesser/numpy,cowlicks/numpy,pbrod/numpy,dwf/numpy,sigma-random/numpy,joferkington/numpy,jankoslavic/numpy,ViralLeadership/numpy,mattip/numpy,nbeaver/numpy,MSeifert04/numpy,matthew-brett/numpy,rhythmsosad/numpy,ChristopherHogan/numpy,ViralLeadership/numpy,sinhrks/numpy,MichaelAquilina/numpy,gmcastil/numpy,bertrand-l/numpy,shoyer/numpy,charris/numpy,NextThought/pypy-numpy,Linkid/numpy,Yusa95/numpy,AustereCuriosity/numpy,mathdd/numpy,ekalosak/numpy,pizzathief/numpy,pyparallel/numpy,jorisvandenbossche/numpy,matthew-brett/numpy,gmcastil/numpy,GaZ3ll3/numpy,grlee77/numpy,dimasad/numpy,ESSS/numpy,ekalosak/numpy,jorisvandenbossche/numpy,CMartelLML/numpy,ajdawson/numpy,groutr/numpy,astrofrog/numpy,shoyer/numpy,b-carter/numpy,Linkid/numpy,gfyoung/numpy,jonathanunderwood/numpy,behzadnouri/numpy,nbeaver/numpy,ddasilva/numpy,sinhrks/numpy,BabeNovelty/numpy,chiffa/numpy,pyparallel/numpy,gfyoung/numpy,nbeaver/numpy,jonathanunderwood/numpy,simongibbons/numpy,rmcgibbo/numpy,andsor/numpy,mortada/numpy,leifdenby/numpy,mortada/numpy,mattip/numpy,ESSS/numpy,abalkin/numpy,Anwesh43/numpy,brandon-rhodes/numpy,dch312/numpy,brandon-rhodes/numpy,brandon-rhodes/numpy,MaPePeR/numpy,MSeifert04/numpy,madphysicist/numpy,mindw/numpy,matthew-brett/numpy,WarrenWeckesser/numpy,jschueller/numpy,BabeNovelty/numpy,dwillmer/numpy,cjermain/numpy,hainm/numpy,ChanderG/numpy,seberg/numpy,dwillmer/numpy,sonnyhu/numpy,embray/numpy,jankoslavic/numpy,grlee77/numpy,drasmuss/numpy,githubmlai/numpy,jschueller/numpy,shoyer/numpy,kirillzhuravlev/numpy,GrimDerp/numpy,rajathkumarmp/numpy,nguyentu1602/numpy,felipebetancur/numpy,njase/numpy,larsmans/numpy,solarjoe/numpy,WillieMaddox/numpy,WarrenWeckesser/numpy,abalkin/numpy,grlee77/numpy,Eric89GXL/numpy,jakirkham/numpy,naritta/numpy,dato-code/numpy,NextThought/pypy-numpy,rgommers/numpy,mingwpy/numpy,sigma-random/numpy,tynn/numpy,solarjoe/numpy,immerrr/numpy,Dapid/numpy,skymanaditya1/numpy,BMJHayward/numpy,madphysicist/numpy,brandon-rhodes/numpy,ssanderson/numpy,cjermain/numpy,drasmuss/numpy,ChristopherHogan/numpy,KaelChen/numpy,trankmichael/numpy,simongibbons/numpy,Dapid/numpy,nguyentu1602/numpy,shoyer/numpy,empeeu/numpy,drasmuss/numpy,rhythmsosad/numpy,mattip/numpy,githubmlai/numpy,ogrisel/numpy,sinhrks/numpy,sonnyhu/numpy,tynn/numpy,ogrisel/numpy,rudimeier/numpy,BabeNovelty/numpy,anntzer/numpy,argriffing/numpy,pelson/numpy,simongibbons/numpy,numpy/numpy,mingwpy/numpy,chiffa/numpy,astrofrog/numpy,cowlicks/numpy,ViralLeadership/numpy,joferkington/numpy,joferkington/numpy,pdebuyl/numpy,rudimeier/numpy,ChristopherHogan/numpy,jorisvandenbossche/numpy,ahaldane/numpy,maniteja123/numpy,ajdawson/numpy,rgommers/numpy,ajdawson/numpy,pbrod/numpy,mwiebe/numpy,matthew-brett/numpy,njase/numpy,GaZ3ll3/numpy,numpy/numpy,CMartelLML/numpy,jakirkham/numpy,Srisai85/numpy,rhythmsosad/numpy,jorisvandenbossche/numpy,Anwesh43/numpy,ContinuumIO/numpy,ssanderson/numpy,andsor/numpy,tdsmith/numpy,Yusa95/numpy,chatcannon/numpy,jakirkham/numpy,MaPePeR/numpy,dato-code/numpy,stefanv/numpy,tdsmith/numpy,hainm/numpy,MSeifert04/numpy,MSeifert04/numpy,Yusa95/numpy,hainm/numpy,skymanaditya1/numpy,Eric89GXL/numpy,immerrr/numpy,BMJHayward/numpy,rmcgibbo/numpy,pizzathief/numpy,mwiebe/numpy,ahaldane/numpy,stefanv/numpy,Srisai85/numpy,bertrand-l/numpy,sonnyhu/numpy,njase/numpy,Yusa95/numpy,numpy/numpy,BMJHayward/numpy,numpy/numpy-refactor,ahaldane/numpy,kiwifb/numpy,moreati/numpy,ogrisel/numpy,groutr/numpy,Eric89GXL/numpy,mindw/numpy,pelson/numpy,BMJHayward/numpy,pelson/numpy,dwillmer/numpy,chatcannon/numpy,solarjoe/numpy,dwillmer/numpy,abalkin/numpy,jonathanunderwood/numpy,SunghanKim/numpy,mhvk/numpy,sigma-random/numpy,cowlicks/numpy,mhvk/numpy,AustereCuriosity/numpy,Linkid/numpy,anntzer/numpy,moreati/numpy,empeeu/numpy,rmcgibbo/numpy,pbrod/numpy,mingwpy/numpy,naritta/numpy,groutr/numpy,bertrand-l/numpy,ewmoore/numpy,ddasilva/numpy,ekalosak/numpy,mhvk/numpy,ChanderG/numpy,GrimDerp/numpy,CMartelLML/numpy,dimasad/numpy,trankmichael/numpy,moreati/numpy,MichaelAquilina/numpy,KaelChen/numpy,pyparallel/numpy,Eric89GXL/numpy,has2k1/numpy,nguyentu1602/numpy,MaPePeR/numpy,dch312/numpy,chiffa/numpy,MaPePeR/numpy,b-carter/numpy,has2k1/numpy,astrofrog/numpy,immerrr/numpy,astrofrog/numpy,naritta/numpy,andsor/numpy,madphysicist/numpy,dwf/numpy,bringingheavendown/numpy,joferkington/numpy,dch312/numpy,SunghanKim/numpy,dato-code/numpy,musically-ut/numpy,cowlicks/numpy,larsmans/numpy,b-carter/numpy,nguyentu1602/numpy,skymanaditya1/numpy,has2k1/numpy,mathdd/numpy,tacaswell/numpy,GaZ3ll3/numpy,dimasad/numpy,ESSS/numpy,simongibbons/numpy,ewmoore/numpy,kirillzhuravlev/numpy,ewmoore/numpy,ContinuumIO/numpy,pizzathief/numpy,endolith/numpy,stefanv/numpy,shoyer/numpy,tacaswell/numpy,charris/numpy,yiakwy/numpy,endolith/numpy,SiccarPoint/numpy