Update changelog for Zulip 1.4 release.
Update changelog for Zulip 1.4 release.

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