Fixed separatevars() to work with new factor()
Fixed separatevars() to work with new factor()

asm666/sympy,aktech/sympy,chaffra/sympy,rahuldan/sympy,Mitchkoens/sympy,debugger22/sympy,Vishluck/sympy,lidavidm/sympy,VaibhavAgarwalVA/sympy,wanglongqi/sympy,meghana1995/sympy,yashsharan/sympy,mcdaniel67/sympy,liangjiaxing/sympy,diofant/diofant,jaimahajan1997/sympy,sampadsaha5/sympy,Curious72/sympy,ChristinaZografou/sympy,ChristinaZografou/sympy,atsao72/sympy,Davidjohnwilson/sympy,asm666/sympy,kmacinnis/sympy,kaichogami/sympy,yukoba/sympy,emon10005/sympy,Arafatk/sympy,Davidjohnwilson/sympy,kevalds51/sympy,souravsingh/sympy,drufat/sympy,ChristinaZografou/sympy,amitjamadagni/sympy,skirpichev/omg,Shaswat27/sympy,Shaswat27/sympy,shikil/sympy,yukoba/sympy,madan96/sympy,debugger22/sympy,postvakje/sympy,beni55/sympy,abloomston/sympy,Arafatk/sympy,Gadal/sympy,MechCoder/sympy,toolforger/sympy,dqnykamp/sympy,Sumith1896/sympy,lindsayad/sympy,kumarkrishna/sympy,grevutiu-gabriel/sympy,moble/sympy,kumarkrishna/sympy,maniteja123/sympy,grevutiu-gabriel/sympy,maniteja123/sympy,aktech/sympy,abloomston/sympy,jbbskinny/sympy,abhiii5459/sympy,sunny94/temp,sahilshekhawat/sympy,oliverlee/sympy,mcdaniel67/sympy,pernici/sympy,mafiya69/sympy,dqnykamp/sympy,hrashk/sympy,postvakje/sympy,pbrady/sympy,Curious72/sympy,kaichogami/sympy,ga7g08/sympy,Shaswat27/sympy,amitjamadagni/sympy,garvitr/sympy,Vishluck/sympy,AunShiLord/sympy,vipulroxx/sympy,skidzo/sympy,jaimahajan1997/sympy,garvitr/sympy,ahhda/sympy,wyom/sympy,kaushik94/sympy,hrashk/sympy,saurabhjn76/sympy,wanglongqi/sympy,toolforger/sympy,AunShiLord/sympy,Gadal/sympy,Curious72/sympy,skidzo/sympy,postvakje/sympy,maniteja123/sympy,shipci/sympy,lidavidm/sympy,grevutiu-gabriel/sympy,atsao72/sympy,hrashk/sympy,meghana1995/sympy,chaffra/sympy,madan96/sympy,Arafatk/sympy,hargup/sympy,Mitchkoens/sympy,AkademieOlympia/sympy,souravsingh/sympy,lidavidm/sympy,farhaanbukhsh/sympy,kumarkrishna/sympy,dqnykamp/sympy,Titan-C/sympy,vipulroxx/sympy,oliverlee/sympy,sunny94/temp,hargup/sympy,srjoglekar246/sympy,yashsharan/sympy,sunny94/temp,liangjiaxing/sympy,sahmed95/sympy,pbrady/sympy,wanglongqi/sympy,kmacinnis/sympy,beni55/sympy,ahhda/sympy,tovrstra/sympy,abhiii5459/sympy,saurabhjn76/sympy,beni55/sympy,minrk/sympy,VaibhavAgarwalVA/sympy,Vishluck/sympy,jbbskinny/sympy,liangjiaxing/sympy,Gadal/sympy,Mitchkoens/sympy,abloomston/sympy,asm666/sympy,cswiercz/sympy,pbrady/sympy,jaimahajan1997/sympy,kevalds51/sympy,wyom/sympy,debugger22/sympy,yukoba/sympy,farhaanbukhsh/sympy,jamesblunt/sympy,chaffra/sympy,ga7g08/sympy,wyom/sympy,bukzor/sympy,atreyv/sympy,ahhda/sympy,Sumith1896/sympy,abhiii5459/sympy,AunShiLord/sympy,sahilshekhawat/sympy,jbbskinny/sympy,MridulS/sympy,garvitr/sympy,kevalds51/sympy,kaushik94/sympy,mafiya69/sympy,kaichogami/sympy,moble/sympy,Davidjohnwilson/sympy,minrk/sympy,atreyv/sympy,Titan-C/sympy,oliverlee/sympy,jerli/sympy,pandeyadarsh/sympy,kaushik94/sympy,atreyv/sympy,shikil/sympy,rahuldan/sympy,moble/sympy,bukzor/sympy,bukzor/sympy,hargup/sympy,MridulS/sympy,shipci/sympy,emon10005/sympy,MridulS/sympy,jerli/sympy,emon10005/sympy,AkademieOlympia/sympy,flacjacket/sympy,ga7g08/sympy,cswiercz/sympy,sahmed95/sympy,lindsayad/sympy,sampadsaha5/sympy,sahmed95/sympy,aktech/sympy,farhaanbukhsh/sympy,Designist/sympy,cccfran/sympy,skidzo/sympy,atsao72/sympy,cccfran/sympy,jamesblunt/sympy,AkademieOlympia/sympy,iamutkarshtiwari/sympy,shikil/sympy,Titan-C/sympy,pandeyadarsh/sympy,sampadsaha5/sympy,kmacinnis/sympy,drufat/sympy,VaibhavAgarwalVA/sympy,rahuldan/sympy,lindsayad/sympy,souravsingh/sympy,drufat/sympy,iamutkarshtiwari/sympy,Sumith1896/sympy,MechCoder/sympy,mattpap/sympy-polys,vipulroxx/sympy,Designist/sympy,mcdaniel67/sympy,sahilshekhawat/sympy,shipci/sympy,madan96/sympy,pandeyadarsh/sympy,Designist/sympy,mafiya69/sympy,jamesblunt/sympy,jerli/sympy,cccfran/sympy,MechCoder/sympy,toolforger/sympy,yashsharan/sympy,cswiercz/sympy,meghana1995/sympy,iamutkarshtiwari/sympy,saurabhjn76/sympy