BUG: special: fix negative order chebyshev polynomials
BUG: special: fix negative order chebyshev polynomials

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ieMaddox/scipy,perimosocordiae/scipy,ogrisel/scipy,mtrbean/scipy,trankmichael/scipy,sauliusl/scipy,cpaulik/scipy,niknow/scipy,lukauskas/scipy,mortada/scipy,mtrbean/scipy,mortada/scipy,mingwpy/scipy,minhlongdo/scipy,jseabold/scipy,witcxc/scipy,gfyoung/scipy,Dapid/scipy,Shaswat27/scipy,gfyoung/scipy,gef756/scipy,matthew-brett/scipy,pyramania/scipy,minhlongdo/scipy,sauliusl/scipy,behzadnouri/scipy,pizzathief/scipy,mortonjt/scipy,Dapid/scipy,tylerjereddy/scipy,mingwpy/scipy,endolith/scipy,mortonjt/scipy,aarchiba/scipy,befelix/scipy,ilayn/scipy,gef756/scipy,endolith/scipy,pbrod/scipy,anielsen001/scipy,matthewalbani/scipy,andyfaff/scipy,fredrikw/scipy,Dapid/scipy,pnedunuri/scipy,niknow/scipy,gdooper/scipy,hainm/scipy,petebachant/scipy,vanpact/scipy,zaxliu/scipy,perimosocordiae/scipy,mikebenfield/scipy,zxsted/scipy,josephcslater/scipy,ChanderG/scipy,rgommers/scipy,dominicelse/scipy,lhilt/scipy,sriki18/scipy,Newman101/scipy,endolith/scipy,chatcannon/scipy,kalvdans/scipy,felipebetancur/scipy,andyfaff/scipy,ChanderG/scipy,vberaudi/scipy,aarchiba/scipy,newemailjdm/scipy,mdhaber/scipy,jonycgn/scipy,Gillu13/scipy,ogrisel/scipy,vigna/scipy,Kamp9/scipy,FRidh/scipy,fernand/scipy,trankmichael/scipy,pnedunuri/scipy,efiring/scipy,aeklant/scipy,woodscn/scipy,woodscn/scipy,ortylp/scipy,jjhelmus/scipy,hainm/scipy,nmayorov/scipy,njwilson23/scipy,zaxliu/scipy,andyfaff/scipy,vanpact/scipy,nonhermitian/scipy,mortonjt/scipy,aman-iitj/scipy,efiring/scipy,vberaudi/scipy,mdhaber/scipy,ndchorley/scipy,zxsted/scipy,Gillu13/scipy,jakevdp/scipy,arokem/scipy,mgaitan/scipy,larsmans/scipy,gef756/scipy,mtrbean/scipy,mdhaber/scipy,mikebenfield/scipy,felipebetancur/scipy,mortada/scipy,mortada/scipy,WarrenWeckesser/scipy,jseabold/scipy,lukauskas/scipy,felipebetancur/scipy,njwilson23/scipy,apbard/scipy,scipy/scipy,chatcannon/scipy,piyush0609/scipy,nvoron23/scipy,newemailjdm/scipy,argriffing/scipy,woodscn/scipy,mikebenfield/scipy,maciejkula/scipy,rmcgibbo/scipy,arokem/scipy,ogrisel/scipy,lhilt/scipy,maniteja123/scipy,zerothi/scipy,Stefan-Endres/scipy,jakevdp/scipy,andim/scipy,gdooper/scipy,WillieMaddox/scipy,sonnyhu/scipy,Srisai85/scipy,anielsen001/scipy,minhlongdo/scipy,rgommers/scipy,lhilt/scipy,scipy/scipy,endolith/scipy,mhogg/scipy,ndchorley/scipy,Eric89GXL/scipy,ndchorley/scipy,ales-erjavec/scipy,grlee77/scipy,fredrikw/scipy,gdooper/scipy,woodscn/scipy,pnedunuri/scipy,pbrod/scipy,andyfaff/scipy,newemailjdm/scipy,ilayn/scipy,Dapid/scipy,ortylp/scipy,Stefan-Endres/scipy,Stefan-Endres/scipy,gertingold/scipy,WillieMaddox/scipy,jamestwebber/scipy,ortylp/scipy,maciejkula/scipy,Stefan-Endres/scipy,hainm/scipy,fernand/scipy,dominicelse/scipy,e-q/scipy,pyramania/scipy,giorgiop/scipy,zaxliu/scipy,surhudm/scipy,sonnyhu/scipy,pyramania/scipy,nvoron23/scipy,futurulus/scipy,haudren/scipy,efiring/scipy,kleskjr/scipy,vhaasteren/scipy,pbrod/scipy,hainm/scipy,cpaulik/scipy,gfyoung/scipy,jamestwebber/scipy,woodscn/scipy,fernand/scipy,zerothi/scipy,woodscn/scipy,ChanderG/scipy,Stefan-Endres/scipy,mtrbean/scipy,perimosocordiae/scipy,mtrbean/scipy,ChanderG/scipy,sriki18/scipy,niknow/scipy,futurulus/scipy,nonhermitian/scipy,befelix/scipy,ChanderG/scipy,behzadnouri/scipy,grlee77/scipy,sonnyhu/scipy,nvoron23/scipy,pnedunuri/scipy,richardotis/scipy,raoulbq/scipy,tylerjereddy/scipy,Kamp9/scipy,perimosocordiae/scipy,haudren/scipy,petebachant/scipy,Eric89GXL/scipy,gfyoung/scipy,Newman101/scipy,Srisai85/scipy,zaxliu/scipy,pschella/scipy,scipy/scipy,e-q/scipy,fredrikw/scipy,anielsen001/scipy,giorgiop/scipy,matthew-brett/scipy,gef756/scipy,Newman101/scipy,argriffing/scipy,Eric89GXL/scipy,jor-/scipy,vanpact/scipy,aeklant/scipy,josephcslater/scipy,gertingold/scipy,pizzathief/scipy,aman-iitj/scipy,sonnyhu/scipy,richardotis/scipy,raoulbq/scipy,nmayorov/scipy,trankmichael/scipy,vigna/scipy,nvoron23/scipy,chatcannon/scipy,raoulbq/scipy,jjhelmus/scipy,gef756/scipy,haudren/scipy,anntzer/scipy,jsilter/scipy,efiring/scipy,dominicelse/scipy,ogrisel/scipy,larsmans/scipy,gdooper/scipy,WillieMaddox/scipy,Shaswat27/scipy,richardotis/scipy,nmayorov/scipy,ilayn/scipy,vberaudi/scipy,pnedunuri/scipy,fernand/scipy,giorgiop/scipy,mgaitan/scipy,futurulus/scipy,vhaasteren/scipy,witcxc/scipy,argriffing/scipy,Newman101/scipy,Shaswat27/scipy,nonhermitian/scipy,petebachant/scipy,andim/scipy,Srisai85/scipy,nmayorov/scipy,WarrenWeckesser/scipy,maniteja123/scipy,Srisai85/scipy,ales-erjavec/scipy,FRidh/scipy,andyfaff/scipy,juliantaylor/scipy,aeklant/scipy,behzadnouri/scipy,vberaudi/scipy,gef756/scipy,aman-iitj/scipy,jor-/scipy,bkendzior/scipy,mingwpy/scipy,mhogg/scipy,raoulbq/scipy,futurulus/scipy,hainm/scipy,mhogg/scipy,pschella/scipy