fixed bug with series of type date losing their data type when performing operations on them
fixed bug with series of type date losing their data type when performing operations on them

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