XypicDiagramDrawer: Sort the morphisms first of all.
XypicDiagramDrawer: Sort the morphisms first of all.

Previously, the mapping object_morphisms was set up before the
morphisms were sorted, which resulted in different order of printing
Xy-pic arrows.

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