Move changelog.md to docs/ and add to ReadTheDocs.
Move changelog.md to docs/ and add to ReadTheDocs.

ryanbackman/zulip,cosmicAsymmetry/zulip,susansls/zulip,jrowan/zulip,JPJPJPOPOP/zulip,hackerkid/zulip,vikas-parashar/zulip,rht/zulip,Frouk/zulip,cosmicAsymmetry/zulip,jackrzhang/zulip,peiwei/zulip,paxapy/zulip,JPJPJPOPOP/zulip,jphilipsen05/zulip,amyliu345/zulip,brockwhittaker/zulip,synicalsyntax/zulip,amyliu345/zulip,timabbott/zulip,peguin40/zulip,dattatreya303/zulip,jainayush975/zulip,rht/zulip,vikas-parashar/zulip,krtkmj/zulip,vaidap/zulip,ryanbackman/zulip,verma-varsha/zulip,blaze225/zulip,SmartPeople/zulip,PhilSk/zulip,synicalsyntax/zulip,Vallher/zulip,JPJPJPOPOP/zulip,tommyip/zulip,peiwei/zulip,ryanbackman/zulip,andersk/zulip,blaze225/zulip,vabs22/zulip,peiwei/zulip,j831/zulip,kou/zulip,Jianchun1/zulip,mahim97/zulip,Diptanshu8/zulip,sonali0901/zulip,dawran6/zulip,niftynei/zulip,peiwei/zulip,verma-varsha/zulip,verma-varsha/zulip,Diptanshu8/zulip,rishig/zulip,jainayush975/zulip,jphilipsen05/zulip,timabbott/zulip,AZtheAsian/zulip,cosmicAsymmetry/zulip,Juanvulcano/zulip,zacps/zulip,Galexrt/zulip,umkay/zulip,tommyip/zulip,aakash-cr7/zulip,mohsenSy/zulip,isht3/zulip,shubhamdhama/zulip,JPJPJPOPOP/zulip,dawran6/zulip,kou/zulip,dattatreya303/zulip,rishig/zulip,TigorC/zulip,arpith/zulip,showell/zulip,rht/zulip,j831/zulip,jainayush975/zulip,brockwhittaker/zulip,Jianchun1/zulip,zulip/zulip,arpith/zulip,souravbadami/zulip,SmartPeople/zulip,hackerkid/zulip,zacps/zulip,kou/zulip,cosmicAsymmetry/zulip,tommyip/zulip,punchagan/zulip,sonali0901/zulip,christi3k/zulip,showell/zulip,peguin40/zulip,zulip/zulip,zacps/zulip,TigorC/zulip,dhcrzf/zulip,kou/zulip,TigorC/zulip,rht/zulip,AZtheAsian/zulip,SmartPeople/zulip,amanharitsh123/zulip,paxapy/zulip,joyhchen/zulip,mahim97/zulip,vabs22/zulip,timabbott/zulip,susansls/zulip,vikas-parashar/zulip,mahim97/zulip,mohsenSy/zulip,tommyip/zulip,peguin40/zulip,souravbadami/zulip,paxapy/zulip,aakash-cr7/zulip,sup95/zulip,sup95/zulip,timabbott/zulip,blaze225/zulip,ahmadassaf/zulip,arpith/zulip,Vallher/zulip,showell/zulip,jackrzhang/zulip,sonali0901/zulip,shubhamdhama/zulip,ryanbackman/zulip,kou/zulip,rishig/zulip,cosmicAsymmetry/zulip,eeshangarg/zulip,Juanvulcano/zulip,Jianchun1/zulip,punchagan/zulip,mohsenSy/zulip,grave-w-grave/zulip,j831/zulip,ryanbackman/zulip,Vallher/zulip,PhilSk/zulip,KingxBanana/zulip,tommyip/zulip,jphilipsen05/zulip,zacps/zulip,Frouk/zulip,vabs22/zulip,joyhchen/zulip,Juanvulcano/zulip,vikas-parashar/zulip,rishig/zulip,dhcrzf/zulip,vaidap/zulip,shubhamdhama/zulip,Diptanshu8/zulip,vaidap/zulip,umkay/zulip,KingxBanana/zulip,PhilSk/zulip,JPJPJPOPOP/zulip,mohsenSy/zulip,amyliu345/zulip,TigorC/zulip,KingxBanana/zulip,amyliu345/zulip,andersk/zulip,PhilSk/zulip,samatdav/zulip,rht/zulip,souravbadami/zulip,amyliu345/zulip,arpith/zulip,susansls/zulip,dattatreya303/zulip,tommyip/zulip,joyhchen/zulip,ahmadassaf/zulip,umkay/zulip,Frouk/zulip,rishig/zulip,sharmaeklavya2/zulip,sharmaeklavya2/zulip,showell/zulip,joyhchen/zulip,samatdav/zulip,vabs22/zulip,rht/zulip,jrowan/zulip,synicalsyntax/zulip,christi3k/zulip,hackerkid/zulip,niftynei/zulip,dhcrzf/zulip,vabs22/zulip,SmartPeople/zulip,amanharitsh123/zulip,calvinleenyc/zulip,calvinleenyc/zulip,punchagan/zulip,rishig/zulip,peiwei/zulip,showell/zulip,blaze225/zulip,tommyip/zulip,Frouk/zulip,isht3/zulip,Galexrt/zulip,calvinleenyc/zulip,jackrzhang/zulip,dawran6/zulip,paxapy/zulip,brainwane/zulip,grave-w-grave/zulip,jackrzhang/zulip,zulip/zulip,souravbadami/zulip,calvinleenyc/zulip,calvinleenyc/zulip,niftynei/zulip,calvinleenyc/zulip,Galexrt/zulip,ryanbackman/zulip,showell/zulip,peiwei/zulip,mahim97/zulip,isht3/zulip,timabbott/zulip,christi3k/zulip,TigorC/zulip,hackerkid/zulip,shubhamdhama/zulip,hackerkid/zulip,mohsenSy/zulip,aakash-cr7/zulip,Diptanshu8/zulip,Vallher/zulip,niftynei/zulip,Vallher/zulip,sonali0901/zulip,PhilSk/zulip,zulip/zulip,synicalsyntax/zulip,andersk/zulip,Frouk/zulip,eeshangarg/zulip,arpith/zulip,synicalsyntax/zulip,amanharitsh123/zulip,SmartPeople/zulip,hackerkid/zulip,eeshangarg/zulip,mohsenSy/zulip,sup95/zulip,peguin40/zulip,SmartPeople/zulip,paxapy/zulip,rht/zulip,grave-w-grave/zulip,ahmadassaf/zulip,eeshangarg/zulip,susansls/zulip,Vallher/zulip,verma-varsha/zulip,peguin40/zulip,reyha/zulip,hackerkid/zulip,samatdav/zulip,paxapy/zulip,isht3/zulip,eeshangarg/zulip,blaze225/zulip,sup95/zulip,umkay/zulip,PhilSk/zulip,susansls/zulip,jphilipsen05/zulip,christi3k/zulip,andersk/zulip,reyha/zulip,aakash-cr7/zulip,jackrzhang/zulip,sharmaeklavya2/zulip,Jianchun1/zulip,synicalsyntax/zulip,isht3/zulip,brainwane/zulip,samatdav/zulip,kou/zulip,jainayush975/zulip,dhcrzf/zulip,verma-varsha/zulip,aakash-cr7/zulip,souravbadami/zulip,arpith/zulip,verma-varsha/zulip,reyha/zulip,KingxBanana/zulip,j831/zulip,punchagan/zulip,ahmadassaf/zulip,reyha/zulip,vaidap/zulip,shubhamdhama/zulip,Galexrt/zulip,sup95/zulip,dhcrzf/zulip,eeshangarg/zulip,Juanvulcano/zulip,Jianchun1/zulip,jphilipsen05/zulip,zacps/zulip,christi3k/zulip,umkay/zulip,jainayush975/zulip,ahmadassaf/zulip,Vallher/zulip,brockwhittaker/zulip,jrowan/zulip,mahim97/zulip,grave-w-grave/zulip,brainwane/zulip,amyliu345/zulip,susansls/zulip,dattatreya303/zulip,eeshangarg/zulip,blaze225/zulip,j831/zulip,Galexrt/zulip,vaidap/zulip,zulip/zulip,shubhamdhama/zulip,AZtheAsian/zulip,grave-w-grave/zulip,ahmadassaf/zulip,punchagan/zulip,punchagan/zulip,zacps/zulip,sharmaeklavya2/zulip,krtkmj/zulip,mahim97/zulip,ahmadassaf/zulip,brainwane/zulip,souravbadami/zulip,krtkmj/zulip,Frouk/zulip,dhcrzf/zulip,vaidap/zulip,JPJPJPOPOP/zulip,AZtheAsian/zulip,dattatreya303/zulip,andersk/zulip,sharmaeklavya2/zulip,Juanvulcano/zulip,punchagan/zulip,jrowan/zulip,dawran6/zulip,niftynei/zulip,jrowan/zulip,isht3/zulip,dattatreya303/zulip,rishig/zulip,umkay/zulip,amanharitsh123/zulip,joyhchen/zulip,Galexrt/zulip,peiwei/zulip,brainwane/zulip,peguin40/zulip,vabs22/zulip,reyha/zulip,timabbott/zulip,vikas-parashar/zulip,sharmaeklavya2/zulip,dawran6/zulip,amanharitsh123/zulip,joyhchen/zulip,Galexrt/zulip,krtkmj/zulip,jackrzhang/zulip,brainwane/zulip,jphilipsen05/zulip,cosmicAsymmetry/zulip,brainwane/zulip,samatdav/zulip,AZtheAsian/zulip,KingxBanana/zulip,showell/zulip,brockwhittaker/zulip,synicalsyntax/zulip,Jianchun1/zulip,brockwhittaker/zulip,Juanvulcano/zulip,krtkmj/zulip,j831/zulip,niftynei/zulip,Diptanshu8/zulip,dawran6/zulip,jackrzhang/zulip,zulip/zulip,reyha/zulip,zulip/zulip,amanharitsh123/zulip,Frouk/zulip,krtkmj/zulip,andersk/zulip,timabbott/zulip,vikas-parashar/zulip,aakash-cr7/zulip,christi3k/zulip,sonali0901/zulip,dhcrzf/zulip,sup95/zulip,kou/zulip,grave-w-grave/zulip,brockwhittaker/zulip,TigorC/zulip,andersk/zulip,AZtheAsian/zulip,umkay/zulip,shubhamdhama/zulip,samatdav/zulip,Diptanshu8/zulip,KingxBanana/zulip,jainayush975/zulip,krtkmj/zulip,sonali0901/zulip,jrowan/zulip