Additional tests for the plotting module.
Additional tests for the plotting module.

The following tests concern the detection of complex numbers in the plotting
routines. The coverage of experimental_lambdify is better, however still not
100% due to bugs in the vectorization routine (it does not detect examples like
sin(LambertW(x)) where a complex sympy expression is given to a python math
function).

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