added function for trace of inverse banded * banded matrix -- used in calculating GCV for SmoothingSpline
added function for trace of inverse banded * banded matrix -- used in calculating GCV for SmoothingSpline

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