Add a rudimentary save() method to plot.
Add a rudimentary save() method to plot.

Currently there is only one argument (string path) that is directly
sent to the backend. No *args or **kwargs.

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