DOC: add line search convergence warning and improve docstrings
DOC: add line search convergence warning and improve docstrings

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