Add clean_bootstrap task.
Add clean_bootstrap task.

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