Gaussian optics module
Gaussian optics module

This commit implements gaussian optics module.
To import use sympy.physics.gaussopt.

It implements
  Ray transfer matrices for geometrical rays and gaussian beams.
  Conjugation relations.

Doctests are present.
Unit tests are not present.

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