[release notes] Add a 5.x header
[release notes] Add a 5.x header

Closes #3130

systay/CodeMirror,ZombieHippie/CodeMirror,davidpham87/CodeMirror,ZombieHippie/CodeMirror,bluesh55/CodeMirror,MarcelGerber/CodeMirror,pabloferz/CodeMirror,fmoliveira/CodeMirror,bluesh55/CodeMirror,MarcelGerber/CodeMirror,bluesh55/CodeMirror,namin/CodeMirror,jkaplon/CodeMirror,ThebingServices/CodeMirror,kangkot/CodeMirror,ashmind/CodeMirror,kuangyeheng/CodeMirror,ThebingServices/CodeMirror,sourcelair/CodeMirror,EasonYi/CodeMirror,supriyantomaftuh/CodeMirror,xeronith/CodeMirror,Aliccer/CodeMirror,philuchansky/CodeMirror,karthikeyansam/CodeMirror,sourcelair/CodeMirror,rasata/CodeMirror,bgrins/CodeMirror,karevn/CodeMirror,matthewbauer/CodeMirror,Allenice/CodeMirror,isdampe/CodeMirror,nightwing/CodeMirror,elisee/CodeMirror,trumanliu/CodeMirror,KamranMackey/CodeMirror,loopspace/CodeMirror,r7kamura/CodeMirror,vanloswang/CodeMirror,camellhf/CodeMirror,kerabromsmu/CodeMirror,agendor/CodeMirror,ejgallego/CodeMirror,SidPresse/CodeMirror,mihailik/CodeMirror,hackmdio/CodeMirror,namin/CodeMirror,sekcheong/CodeMirror,axter/CodeMirror,amshali/CodeMirror,mizchi/CodeMirror,ficristo/CodeMirror,nightwing/CodeMirror,flyskyko/CodeMirror,mihailik/CodeMirror,thomasjm/CodeMirror,qiankun007/CodeMirror,mizchi/CodeMirror,Icenium/CodeMirror,r7kamura/CodeMirror,ssxxue/CodeMirror,schanzer/CodeMirror,matthewbauer/CodeMirror,antimatter15/CodeMirror,Allenice/CodeMirror,kerabromsmu/CodeMirror,karthikeyansam/CodeMirror,tpphu/CodeMirror,cintiamh/CodeMirror,ficristo/CodeMirror,ThebingServices/CodeMirror,apatawari/CodeMirror,nawroth/CodeMirror,Jisuanke/CodeMirror,fmoliveira/CodeMirror,dperetti/CodeMirror,crazy4chrissi/CodeMirror,ksanaforge/CodeMirror,NumbersInternational/CodeMirror,michaelerobertsjr/CodeMirror,xeronith/CodeMirror,INTELOGIE/CodeMirror,increpare/CodeMirror,notepadqq/CodeMirror,kuangyeheng/CodeMirror,d0liver/CodeMirror,rasata/CodeMirror,kuangyeheng/CodeMirror,DustinH/CodeMirror,happibum/CodeMirror-main,vanloswang/CodeMirror,ashmind/CodeMirror,notepadqq/CodeMirror,rrandom/CodeMirror,pabloferz/CodeMirror,trumanliu/CodeMirror,kangkot/CodeMirror,gkoberger/CodeMirror,nawroth/CodeMirror,d0liver/CodeMirror,loopspace/CodeMirror,mightyguava/CodeMirror,EasonYi/CodeMirror,jkaplon/CodeMirror,NeZaMy/CodeMirror2,amshali/CodeMirror,AlanWasTaken/codemirror,dbarnett/CodeMirror,sekcheong/CodeMirror,Icenium/CodeMirror,jayaprabhakar/CodeMirror,jessegrosjean/CodeMirror,jessegrosjean/CodeMirror,anthonygego/CodeMirror,NeZaMy/CodeMirror2,EasonYi/CodeMirror,nightwing/CodeMirror,mightyguava/CodeMirror,Dominator008/CodeMirror,InternetGuru/CodeMirror,thomasjm/CodeMirror,bfrohs/CodeMirror,INTELOGIE/CodeMirror,michaelerobertsjr/CodeMirror,alur/CodeMirror,isdampe/CodeMirror,AlanWasTaken/codemirror,Navaneethsen/CodeMirror,Jisuanke/CodeMirror,manderson23/CodeMirror,dudb/CodeMirror,mizchi/CodeMirror,vincentwoo/CodeMirror,elisee/CodeMirror,wingify/CodeMirror,skylarkcob/CodeMirror,philuchansky/CodeMirror,djadmin/CodeMirror,dbarnett/CodeMirror,kk9599/CodeMirror,alur/CodeMirror,Allenice/CodeMirror,apatawari/CodeMirror,bocharsky-bw/CodeMirror,sanyaade-iot/CodeMirror,increpare/CodeMirror,buchslava/CodeMirror,tpphu/CodeMirror,ZombieHippie/CodeMirror,rustemferreira/CodeMirror,michaelerobertsjr/CodeMirror,INTELOGIE/CodeMirror,r7kamura/CodeMirror,Aliccer/CodeMirror,qweasd1/CodeMirror,ficristo/CodeMirror,rasata/CodeMirror,nawroth/CodeMirror,vincentwoo/CodeMirror,davidpham87/CodeMirror,Aliccer/CodeMirror,rrandom/CodeMirror,karevn/CodeMirror,bocharsky-bw/CodeMirror,supriyantomaftuh/CodeMirror,wingify/CodeMirror,qweasd1/CodeMirror,happibum/CodeMirror-main,wingify/CodeMirror,pjkui/CodeMirror,manderson23/CodeMirror,grzegorzmazur/CodeMirror,Jisuanke/CodeMirror,camellhf/CodeMirror,TDaglis/CodeMirror,happibum/CodeMirror-main,jessegrosjean/CodeMirror,matthewbauer/CodeMirror,amshali/CodeMirror,shiren/CodeMirror,skylarkcob/CodeMirror,qiankun007/CodeMirror,sanyaade-iot/CodeMirror,qiankun007/CodeMirror,notepadqq/CodeMirror,antimatter15/CodeMirror,gkoberger/CodeMirror,Navaneethsen/CodeMirror,TDaglis/CodeMirror,mtaran-google/CodeMirror,dbarnett/CodeMirror,morrisonwudi/CodeMirror,mtaran-google/CodeMirror,namin/CodeMirror,isdampe/CodeMirror,jayaprabhakar/CodeMirror,elisee/CodeMirror,bocharsky-bw/CodeMirror,adobe/CodeMirror2,SidPresse/CodeMirror,symbla/CodeMirror,symbla/CodeMirror,melpon/CodeMirror,dperetti/CodeMirror,sourcelair/CodeMirror,kk9599/CodeMirror,cintiamh/CodeMirror,ejgallego/CodeMirror,Dominator008/CodeMirror,trumanliu/CodeMirror,supriyantomaftuh/CodeMirror,melpon/CodeMirror,NumbersInternational/CodeMirror,dudb/CodeMirror,bfrohs/CodeMirror,TDaglis/CodeMirror,kk9599/CodeMirror,schanzer/CodeMirror,increpare/CodeMirror,hackmdio/CodeMirror,Icenium/CodeMirror,djadmin/CodeMirror,hccampos/CodeMirror,thomasjm/CodeMirror,vincentwoo/CodeMirror,davidpham87/CodeMirror,TechnicalPursuit/CodeMirror,pinbe/CodeMirror,manderson23/CodeMirror,loopspace/CodeMirror,skylarkcob/CodeMirror,buchslava/CodeMirror,pjkui/CodeMirror,karthikeyansam/CodeMirror,sekcheong/CodeMirror,hccampos/CodeMirror,agendor/CodeMirror,d0liver/CodeMirror,antimatter15/CodeMirror,kangkot/CodeMirror,codio/CodeMirror,bfrohs/CodeMirror,ssxxue/CodeMirror,morrisonwudi/CodeMirror,djadmin/CodeMirror,axter/CodeMirror,Navaneethsen/CodeMirror,jkaplon/CodeMirror,crazy4chrissi/CodeMirror,SidPresse/CodeMirror,alur/CodeMirror,InternetGuru/CodeMirror,mihailik/CodeMirror,shiren/CodeMirror,shiren/CodeMirror,anthonygego/CodeMirror,DustinH/CodeMirror,morrisonwudi/CodeMirror,hccampos/CodeMirror,pabloferz/CodeMirror,tpphu/CodeMirror,bgrins/CodeMirror,ssxxue/CodeMirror,dperetti/CodeMirror,kerabromsmu/CodeMirror,symbla/CodeMirror,ksanaforge/CodeMirror,vanloswang/CodeMirror,mightyguava/CodeMirror,TechnicalPursuit/CodeMirror,MarcelGerber/CodeMirror,flyskyko/CodeMirror,camellhf/CodeMirror,qweasd1/CodeMirror,rustemferreira/CodeMirror,agendor/CodeMirror,bgrins/CodeMirror,codio/CodeMirror,apatawari/CodeMirror,gkoberger/CodeMirror,cintiamh/CodeMirror,pinbe/CodeMirror,adobe/CodeMirror2,ksanaforge/CodeMirror,InternetGuru/CodeMirror,rrandom/CodeMirror,DustinH/CodeMirror,grzegorzmazur/CodeMirror,rustemferreira/CodeMirror,anthonygego/CodeMirror,mtaran-google/CodeMirror,pjkui/CodeMirror,NeZaMy/CodeMirror2,crazy4chrissi/CodeMirror,adobe/CodeMirror2,axter/CodeMirror,systay/CodeMirror,fmoliveira/CodeMirror,AlanWasTaken/codemirror,hackmdio/CodeMirror,NumbersInternational/CodeMirror,Dominator008/CodeMirror,KamranMackey/CodeMirror,melpon/CodeMirror,codio/CodeMirror,KamranMackey/CodeMirror,pinbe/CodeMirror,sanyaade-iot/CodeMirror,flyskyko/CodeMirror,ejgallego/CodeMirror,xeronith/CodeMirror,TechnicalPursuit/CodeMirror,schanzer/CodeMirror,systay/CodeMirror,jayaprabhakar/CodeMirror,ashmind/CodeMirror,buchslava/CodeMirror,philuchansky/CodeMirror,karevn/CodeMirror,dudb/CodeMirror,grzegorzmazur/CodeMirror