Cleanup dot.py
Cleanup dot.py

Don't use kwargs for the options.  Update the docstring with the options.  I
changed the name of the option ``depth`` to ``maxdepth``.

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