docs/mypy: Add note about Zulip's annotation goals.
docs/mypy: Add note about Zulip's annotation goals.

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