clean up vertices and unify RegularPolygon with Polygon
clean up vertices and unify RegularPolygon with Polygon

    The vertices method returns a copy of the Polygon args
    or computes and return a RegularPolygon's vertices. When
    iterating over vertices it is costly to keep creating and
    indexing the vertices like self.vertices[i] rather than
    simply self[i]. In order for this to work for RegularPolygon (RP)
    the __getitem__ method had to be written to return a virtual
    vertex (since there are only always 3 args for RP). This also
    required that the RP store its parameters so they can be retrieved
    with the properties (center, radius) or len().

    The __eq__ method was cleaned up to use all. There is no need to
    search for and store equal starting points.

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