DOC: Clarify data type of inputs for Data objects
DOC: Clarify data type of inputs for Data objects

Clarified that 'y' can either be array_like or a
scalar for Data objects. The latter implies that
the model used on the data will be implicit, while
the former implies that the model used on the data
will be explicit.

pyramania/scipy,matthew-brett/scipy,bkendzior/scipy,jjhelmus/scipy,tylerjereddy/scipy,haudren/scipy,gfyoung/scipy,pbrod/scipy,nmayorov/scipy,argriffing/scipy,Eric89GXL/scipy,matthew-brett/scipy,aarchiba/scipy,josephcslater/scipy,josephcslater/scipy,ilayn/scipy,nonhermitian/scipy,aeklant/scipy,anntzer/scipy,endolith/scipy,haudren/scipy,gertingold/scipy,rgommers/scipy,rgommers/scipy,arokem/scipy,andyfaff/scipy,kleskjr/scipy,aeklant/scipy,jakevdp/scipy,tylerjereddy/scipy,behzadnouri/scipy,matthew-brett/scipy,Eric89GXL/scipy,pschella/scipy,pschella/scipy,dominicelse/scipy,Stefan-Endres/scipy,sriki18/scipy,grlee77/scipy,maniteja123/scipy,pyramania/scipy,WarrenWeckesser/scipy,nonhermitian/scipy,matthewalbani/scipy,matthew-brett/scipy,jamestwebber/scipy,pbrod/scipy,mdhaber/scipy,haudren/scipy,pizzathief/scipy,tylerjereddy/scipy,woodscn/scipy,haudren/scipy,grlee77/scipy,josephcslater/scipy,anntzer/scipy,aeklant/scipy,tylerjereddy/scipy,maniteja123/scipy,zerothi/scipy,anielsen001/scipy,person142/scipy,aarchiba/scipy,matthew-brett/scipy,Stefan-Endres/scipy,Newman101/scipy,Newman101/scipy,haudren/scipy,gertingold/scipy,bkendzior/scipy,andyfaff/scipy,endolith/scipy,andyfaff/scipy,person142/scipy,argriffing/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,befelix/scipy,maniteja123/scipy,scipy/scipy,gdooper/scipy,bkendzior/scipy,gdooper/scipy,jor-/scipy,niknow/scipy,apbard/scipy,pizzathief/scipy,woodscn/scipy,jakevdp/scipy,jakevdp/scipy,niknow/scipy,woodscn/scipy,lhilt/scipy,rgommers/scipy,befelix/scipy,woodscn/scipy,kalvdans/scipy,andyfaff/scipy,e-q/scipy,mikebenfield/scipy,lhilt/scipy,kleskjr/scipy,arokem/scipy,mikebenfield/scipy,pbrod/scipy,Stefan-Endres/scipy,gdooper/scipy,tylerjereddy/scipy,gertingold/scipy,surhudm/scipy,jor-/scipy,pyramania/scipy,matthewalbani/scipy,josephcslater/scipy,jor-/scipy,vigna/scipy,Newman101/scipy,jjhelmus/scipy,aarchiba/scipy,vigna/scipy,jakevdp/scipy,aeklant/scipy,pizzathief/scipy,WarrenWeckesser/scipy,sriki18/scipy,kalvdans/scipy,argriffing/scipy,mikebenfield/scipy,ilayn/scipy,gfyoung/scipy,jjhelmus/scipy,anielsen001/scipy,e-q/scipy,scipy/scipy,e-q/scipy,grlee77/scipy,pbrod/scipy,perimosocordiae/scipy,zerothi/scipy,vigna/scipy,jamestwebber/scipy,scipy/scipy,pizzathief/scipy,jamestwebber/scipy,befelix/scipy,gdooper/scipy,niknow/scipy,befelix/scipy,WarrenWeckesser/scipy,bkendzior/scipy,vigna/scipy,surhudm/scipy,maniteja123/scipy,anntzer/scipy,jor-/scipy,mdhaber/scipy,apbard/scipy,surhudm/scipy,gfyoung/scipy,jakevdp/scipy,anntzer/scipy,kalvdans/scipy,behzadnouri/scipy,zerothi/scipy,aeklant/scipy,nonhermitian/scipy,nonhermitian/scipy,gfyoung/scipy,josephcslater/scipy,Newman101/scipy,surhudm/scipy,gertingold/scipy,endolith/scipy,matthewalbani/scipy,WarrenWeckesser/scipy,jamestwebber/scipy,woodscn/scipy,sriki18/scipy,zerothi/scipy,anntzer/scipy,dominicelse/scipy,Stefan-Endres/scipy,nonhermitian/scipy,Stefan-Endres/scipy,scipy/scipy,kleskjr/scipy,argriffing/scipy,mdhaber/scipy,apbard/scipy,kleskjr/scipy,niknow/scipy,kalvdans/scipy,endolith/scipy,pschella/scipy,lhilt/scipy,surhudm/scipy,matthewalbani/scipy,pizzathief/scipy,perimosocordiae/scipy,niknow/scipy,dominicelse/scipy,behzadnouri/scipy,befelix/scipy,person142/scipy,grlee77/scipy,sriki18/scipy,perimosocordiae/scipy,andyfaff/scipy,pyramania/scipy,lhilt/scipy,andyfaff/scipy,perimosocordiae/scipy,behzadnouri/scipy,pbrod/scipy,niknow/scipy,person142/scipy,e-q/scipy,rgommers/scipy,grlee77/scipy,jamestwebber/scipy,dominicelse/scipy,apbard/scipy,argriffing/scipy,nmayorov/scipy,mdhaber/scipy,anntzer/scipy,gertingold/scipy,pbrod/scipy,haudren/scipy,matthewalbani/scipy,pschella/scipy,kleskjr/scipy,WarrenWeckesser/scipy,arokem/scipy,scipy/scipy,gfyoung/scipy,anielsen001/scipy,jjhelmus/scipy,mikebenfield/scipy,Newman101/scipy,Eric89GXL/scipy,arokem/scipy,ilayn/scipy,kleskjr/scipy,surhudm/scipy,zerothi/scipy,lhilt/scipy,endolith/scipy,mikebenfield/scipy,anielsen001/scipy,aarchiba/scipy,scipy/scipy,Newman101/scipy,bkendzior/scipy,pyramania/scipy,maniteja123/scipy,person142/scipy,ilayn/scipy,rgommers/scipy,arokem/scipy,vigna/scipy,gdooper/scipy,nmayorov/scipy,kalvdans/scipy,maniteja123/scipy,argriffing/scipy,Eric89GXL/scipy,nmayorov/scipy,e-q/scipy,anielsen001/scipy,perimosocordiae/scipy,behzadnouri/scipy,sriki18/scipy,zerothi/scipy,Stefan-Endres/scipy,nmayorov/scipy,perimosocordiae/scipy,ilayn/scipy,jjhelmus/scipy,pschella/scipy,sriki18/scipy,woodscn/scipy,endolith/scipy,Eric89GXL/scipy,behzadnouri/scipy,dominicelse/scipy,mdhaber/scipy,anielsen001/scipy,aarchiba/scipy,jor-/scipy,ilayn/scipy,apbard/scipy,mdhaber/scipy