secondquant: Added tests for dummy substitution
secondquant: Added tests for dummy substitution

New tests for expressions with AntiSymmetricTensor.  (Earlier tests used
Function)

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