Unit now behave like Symbol (e.g. Unit('meter', 'm').args = () and not ('meter', 'm')).
Unit now behave like Symbol (e.g. Unit('meter', 'm').args = () and not ('meter', 'm')).


Signed-off-by: Stefano Maggiolo <abfc5bfc3a736476beceae0f5b02e790cf127a92@gmail.com>
Signed-off-by: Kirill Smelkov <b0eeaac46e675e9f95bf68c0df1041cf581c26f4@landau.phys.spbu.ru>

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