Added __lt__ methods needed in Python3
Added __lt__ methods needed in Python3

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