Add a simple test for lfilter on rank 3 arrays (skipped since it segfaults lfilter).
Add a simple test for lfilter on rank 3 arrays (skipped since it segfaults lfilter).

pizzathief/scipy,argriffing/scipy,ChanderG/scipy,e-q/scipy,Gillu13/scipy,ales-erjavec/scipy,anielsen001/scipy,gef756/scipy,rmcgibbo/scipy,mtrbean/scipy,zerothi/scipy,mortada/scipy,newemailjdm/scipy,matthewalbani/scipy,Stefan-Endres/scipy,giorgiop/scipy,mhogg/scipy,endolith/scipy,Dapid/scipy,vhaasteren/scipy,larsmans/scipy,matthew-brett/scipy,arokem/scipy,befelix/scipy,jsilter/scipy,maniteja123/scipy,raoulbq/scipy,piyush0609/scipy,nmayorov/scipy,aeklant/scipy,trankmichael/scipy,vigna/scipy,WarrenWeckesser/scipy,mortonjt/scipy,jamestwebber/scipy,kalvdans/scipy,pschella/scipy,person142/scipy,kleskjr/scipy,petebachant/scipy,pnedunuri/scipy,argriffing/scipy,sargas/scipy,vanpact/scipy,trankmichael/scipy,zxsted/scipy,sargas/scipy,zaxliu/scipy,rmcgibbo/scipy,jseabold/scipy,cpaulik/scipy,ilayn/scipy,pbrod/scipy,lukauskas/scipy,vberaudi/scipy,njwilson23/scipy,arokem/scipy,nmayorov/scipy,endolith/scipy,pbrod/scipy,pyramania/scipy,anielsen001/scipy,matthewalbani/scipy,kleskjr/scipy,dch312/scipy,rmcgibbo/scipy,piyush0609/scipy,zxsted/scipy,nmayorov/scipy,mortada/scipy,dch312/scipy,jamestwebber/scipy,hainm/scipy,Srisai85/scipy,Kamp9/scipy,niknow/scipy,anntzer/scipy,ortylp/scipy,nvoron23/scipy,WillieMaddox/scipy,rgommers/scipy,lhilt/scipy,mingwpy/scipy,dch312/scipy,anntzer/scipy,pyramania/scipy,andim/scipy,zaxliu/scipy,maciejkula/scipy,cpaulik/scipy,WillieMaddox/scipy,apbard/scipy,jseabold/scipy,ales-erjavec/scipy,ndchorley/scipy,nonhermitian/scipy,nvoron23/scipy,FRidh/scipy,aman-iitj/scipy,vanpact/scipy,mikebenfield/scipy,FRidh/scipy,maciejkula/scipy,chatcannon/scipy,sauliusl/scipy,matthew-brett/scipy,ortylp/scipy,nonhermitian/scipy,mortonjt/scipy,surhudm/scipy,anielsen001/scipy,mortada/scipy,mortonjt/scipy,vhaasteren/scipy,surhudm/scipy,behzadnouri/scipy,jakevdp/scipy,petebachant/scipy,ilayn/scipy,andim/scipy,grlee77/scipy,andim/scipy,mgaitan/scipy,Kamp9/scipy,minhlongdo/scipy,person142/scipy,perimosocordiae/scipy,sauliusl/scipy,matthewalbani/scipy,WarrenWeckesser/scipy,chatcannon/scipy,futurulus/scipy,apbard/scipy,ortylp/scipy,dch312/scipy,efiring/scipy,person142/scipy,woodscn/scipy,dominicelse/scipy,minhlongdo/scipy,chatcannon/scipy,gdooper/scipy,Shaswat27/scipy,josephcslater/scipy,mgaitan/scipy,vigna/scipy,hainm/scipy,kalvdans/scipy,teoliphant/scipy,jakevdp/scipy,zerothi/scipy,ilayn/scipy,futurulus/scipy,fredrikw/scipy,haudren/scipy,mdhaber/scipy,argriffing/scipy,sonnyhu/scipy,felipebetancur/scipy,mhogg/scipy,lukauskas/scipy,sauliusl/scipy,andyfaff/scipy,endolith/scipy,haudren/scipy,anntzer/scipy,richardotis/scipy,mdhaber/scipy,dominicelse/scipy,mtrbean/scipy,maniteja123/scipy,Eric89GXL/scipy,ilayn/scipy,Kamp9/scipy,lukauskas/scipy,rgommers/scipy,sauliusl/scipy,apbard/scipy,surhudm/scipy,aman-iitj/scipy,mingwpy/scipy,larsmans/scipy,jakevdp/scipy,witcxc/scipy,ales-erjavec/scipy,gertingold/scipy,maciejkula/scipy,aarchiba/scipy,juliantaylor/scipy,futurulus/scipy,larsmans/scipy,arokem/scipy,grlee77/scipy,giorgiop/scipy,witcxc/scipy,josephcslater/scipy,pnedunuri/scipy,njwilson23/scipy,gef756/scipy,matthewalbani/scipy,bkendzior/scipy,endolith/scipy,mortonjt/scipy,witcxc/scipy,kalvdans/scipy,andim/scipy,pyramania/scipy,ChanderG/scipy,richardotis/scipy,ortylp/scipy,jor-/scipy,ndchorley/scipy,vberaudi/scipy,fernand/scipy,e-q/scipy,sauliusl/scipy,anntzer/scipy,ndchorley/scipy,haudren/scipy,person142/scipy,cpaulik/scipy,sriki18/scipy,mingwpy/scipy,hainm/scipy,newemailjdm/scipy,WarrenWeckesser/scipy,juliantaylor/scipy,pyramania/scipy,fernand/scipy,grlee77/scipy,ogrisel/scipy,grlee77/scipy,aeklant/scipy,vhaasteren/scipy,piyush0609/scipy,maciejkula/scipy,trankmichael/scipy,scipy/scipy,ndchorley/scipy,Newman101/scipy,gdooper/scipy,ogrisel/scipy,ortylp/scipy,mikebenfield/scipy,kleskjr/scipy,trankmichael/scipy,fernand/scipy,Gillu13/scipy,andyfaff/scipy,e-q/scipy,piyush0609/scipy,mingwpy/scipy,zxsted/scipy,gertingold/scipy,bkendzior/scipy,haudren/scipy,fredrikw/scipy,teoliphant/scipy,niknow/scipy,njwilson23/scipy,felipebetancur/scipy,mikebenfield/scipy,zxsted/scipy,sriki18/scipy,kleskjr/scipy,lukauskas/scipy,pizzathief/scipy,Srisai85/scipy,gertingold/scipy,mhogg/scipy,minhlongdo/scipy,andim/scipy,jsilter/scipy,gef756/scipy,chatcannon/scipy,tylerjereddy/scipy,aarchiba/scipy,pizzathief/scipy,mingwpy/scipy,Shaswat27/scipy,sriki18/scipy,nvoron23/scipy,ales-erjavec/scipy,piyush0609/scipy,felipebetancur/scipy,mgaitan/scipy,vberaudi/scipy,sargas/scipy,lhilt/scipy,petebachant/scipy,behzadnouri/scipy,teoliphant/scipy,sonnyhu/scipy,kalvdans/scipy,raoulbq/scipy,dominicelse/scipy,jjhelmus/scipy,e-q/scipy,e-q/scipy,jseabold/scipy,nvoron23/scipy,maciejkula/scipy,pbrod/scipy,maniteja123/scipy,aarchiba/scipy,fernand/scipy,josephcslater/scipy,nonhermitian/scipy,aarchiba/scipy,felipebetancur/scipy,raoulbq/scipy,gfyoung/scipy,lhilt/scipy,Dapid/scipy,pschella/scipy,grlee77/scipy,tylerjereddy/scipy,ilayn/scipy,sonnyhu/scipy,aman-iitj/scipy,maniteja123/scipy,andyfaff/scipy,pizzathief/scipy,anntzer/scipy,Dapid/scipy,jjhelmus/scipy,woodscn/scipy,vigna/scipy,vigna/scipy,pschella/scipy,haudren/scipy,haudren/scipy,behzadnouri/scipy,mtrbean/scipy,anielsen001/scipy,jjhelmus/scipy,vanpact/scipy,argriffing/scipy,gfyoung/scipy,rgommers/scipy,endolith/scipy,mhogg/scipy,sonnyhu/scipy,newemailjdm/scipy,vigna/scipy,jonycgn/scipy,Gillu13/scipy,gertingold/scipy,efiring/scipy,ogrisel/scipy,andyfaff/scipy,andyfaff/scipy,maniteja123/scipy,njwilson23/scipy,jor-/scipy,pnedunuri/scipy,zaxliu/scipy,trankmichael/scipy,lhilt/scipy,gdooper/scipy,mortada/scipy,niknow/scipy,FRidh/scipy,jakevdp/scipy,scipy/scipy,WarrenWeckesser/scipy,aeklant/scipy,Newman101/scipy,perimosocordiae/scipy,witcxc/scipy,pyramania/scipy,Eric89GXL/scipy,ogrisel/scipy,Gillu13/scipy,vanpact/scipy,perimosocordiae/scipy,befelix/scipy,Shaswat27/scipy,mdhaber/scipy,vanpact/scipy,argriffing/scipy,hainm/scipy,rgommers/scipy,mikebenfield/scipy,ales-erjavec/scipy,WillieMaddox/scipy,WarrenWeckesser/scipy,futurulus/scipy,gertingold/scipy,larsmans/scipy,vhaasteren/scipy,petebachant/scipy,giorgiop/scipy,scipy/scipy,josephcslater/scipy,aarchiba/scipy,aman-iitj/scipy,ortylp/scipy,perimosocordiae/scipy,zaxliu/scipy,mortada/scipy,anntzer/scipy,befelix/scipy,bkendzior/scipy,sonnyhu/scipy,Stefan-Endres/scipy,surhudm/scipy,woodscn/scipy,teoliphant/scipy,nonhermitian/scipy,ChanderG/scipy,piyush0609/scipy,Newman101/scipy,pbrod/scipy,endolith/scipy,richardotis/scipy,Newman101/scipy,josephcslater/scipy,rmcgibbo/scipy,hainm/scipy,nvoron23/scipy,dch312/scipy,lhilt/scipy,Shaswat27/scipy,efiring/scipy,jseabold/scipy,jseabold/scipy,jsilter/scipy,befelix/scipy,dominicelse/scipy,gef756/scipy,woodscn/scipy,fernand/scipy,gfyoung/scipy,giorgiop/scipy,pnedunuri/scipy,bkendzior/scipy,Eric89GXL/scipy,tylerjereddy/scipy,giorgiop/scipy,gfyoung/scipy,FRidh/scipy,juliantaylor/scipy,anielsen001/scipy,mtrbean/scipy,newemailjdm/scipy,Stefan-Endres/scipy,richardotis/scipy,sauliusl/scipy,jonycgn/scipy,felipebetancur/scipy,andim/scipy,juliantaylor/scipy,Shaswat27/scipy,FRidh/scipy,pschella/scipy,rgommers/scipy,efiring/scipy,fredrikw/scipy,mortada/scipy,jsilter/scipy,Shaswat27/scipy,woodscn/scipy,tylerjereddy/scipy,minhlongdo/scipy,cpaulik/scipy,Eric89GXL/scipy,WillieMaddox/scipy,nmayorov/scipy,mdhaber/scipy,fredrikw/scipy,zxsted/scipy,mikebenfield/scipy,perimosocordiae/scipy,niknow/scipy,gef756/scipy,surhudm/scipy,ChanderG/scipy,ChanderG/scipy,Stefan-Endres/scipy,jamestwebber/scipy,apbard/scipy,chatcannon/scipy,FRidh/scipy,felipebetancur/scipy,Stefan-Endres/scipy,aeklant/scipy,chatcannon/scipy,Newman101/scipy,scipy/scipy,teoliphant/scipy,andyfaff/scipy,behzadnouri/scipy,mgaitan/scipy,anielsen001/scipy,Srisai85/scipy,jor-/scipy,rmcgibbo/scipy,sargas/scipy,kleskjr/scipy,zaxliu/scipy,jamestwebber/scipy,Dapid/scipy,zerothi/scipy,jamestwebber/scipy,kalvdans/scipy,mtrbean/scipy,Kamp9/scipy,maniteja123/scipy,newemailjdm/scipy,person142/scipy,lukauskas/scipy,jor-/scipy,argriffing/scipy,jonycgn/scipy,ndchorley/scipy,nvoron23/scipy,WarrenWeckesser/scipy,larsmans/scipy,lukauskas/scipy,cpaulik/scipy,behzadnouri/scipy,kleskjr/scipy,Gillu13/scipy,vberaudi/scipy,fredrikw/scipy,sriki18/scipy,sriki18/scipy,mgaitan/scipy,mortonjt/scipy,efiring/scipy,njwilson23/scipy,bkendzior/scipy,arokem/scipy,scipy/scipy,jonycgn/scipy,niknow/scipy,Srisai85/scipy,zerothi/scipy,Kamp9/scipy,jjhelmus/scipy,raoulbq/scipy,richardotis/scipy,hainm/scipy,raoulbq/scipy,WillieMaddox/scipy,mgaitan/scipy,sonnyhu/scipy,sargas/scipy,Dapid/scipy,mdhaber/scipy,pbrod/scipy,zerothi/scipy,pnedunuri/scipy,mtrbean/scipy,zaxliu/scipy,tylerjereddy/scipy,ndchorley/scipy,matthew-brett/scipy,apbard/scipy,cpaulik/scipy,gfyoung/scipy,surhudm/scipy,Srisai85/scipy,mhogg/scipy,aeklant/scipy,Eric89GXL/scipy,jsilter/scipy,pbrod/scipy,jonycgn/scipy,gdooper/scipy,perimosocordiae/scipy,zerothi/scipy,mingwpy/scipy,vhaasteren/scipy,behzadnouri/scipy,arokem/scipy,vberaudi/scipy,nonhermitian/scipy,matthewalbani/scipy,newemailjdm/scipy,trankmichael/scipy,mortonjt/scipy,larsmans/scipy,Eric89GXL/scipy,dominicelse/scipy,minhlongdo/scipy,mdhaber/scipy,ilayn/scipy,ales-erjavec/scipy,fernand/scipy,matthew-brett/scipy,richardotis/scipy,jonycgn/scipy,juliantaylor/scipy,gef756/scipy,Newman101/scipy,niknow/scipy,WillieMaddox/scipy,matthew-brett/scipy,woodscn/scipy,Srisai85/scipy,gdooper/scipy,jakevdp/scipy,jjhelmus/scipy,Stefan-Endres/scipy,mhogg/scipy,Dapid/scipy,rmcgibbo/scipy,futurulus/scipy,scipy/scipy,Kamp9/scipy,ogrisel/scipy,raoulbq/scipy,giorgiop/scipy,njwilson23/scipy,pizzathief/scipy,nmayorov/scipy,vberaudi/scipy,pnedunuri/scipy,pschella/scipy,petebachant/scipy,fredrikw/scipy,aman-iitj/scipy,jseabold/scipy,jor-/scipy,zxsted/scipy,petebachant/scipy,befelix/scipy,witcxc/scipy,vanpact/scipy,vhaasteren/scipy,aman-iitj/scipy,ChanderG/scipy,minhlongdo/scipy,Gillu13/scipy,efiring/scipy,sriki18/scipy,futurulus/scipy