Make insertTab, defaultTab, and newlineAndIndent commands mark their changes as input
Make insertTab, defaultTab, and newlineAndIndent commands mark their changes as input

This helps the undo history notice that it may combine them.

Issue #970

InternetGuru/CodeMirror,trumanliu/CodeMirror,pjkui/CodeMirror,camellhf/CodeMirror,fpco/codemirror,Ermlab/CodeMirror,fmoliveira/CodeMirror,dperetti/CodeMirror,AlanWasTaken/codemirror,ssxxue/CodeMirror,mightyguava/CodeMirror,INTELOGIE/CodeMirror,nawroth/CodeMirror,hccampos/CodeMirror,joshterrell805-historic/CodeMirror,Icenium/CodeMirror,qweasd1/CodeMirror,EasonYi/CodeMirror,jpolitz/CodeMirror,bgrins/CodeMirror,elisee/CodeMirror,sanyaade-iot/CodeMirror,cben/CodeMirror,philuchansky/CodeMirror,Navaneethsen/CodeMirror,amsul/CodeMirror,Jisuanke/CodeMirror,manderson23/CodeMirror,cintiamh/CodeMirror,sekcheong/CodeMirror,KamranMackey/CodeMirror,Carreau/CodeMirror,mihailik/CodeMirror,cintiamh/CodeMirror,matthewbauer/CodeMirror,mightyguava/CodeMirror,jhnesk/CodeMirror,shiren/CodeMirror,Icenium/CodeMirror,djadmin/CodeMirror,codio/CodeMirror,TDaglis/CodeMirror,NeZaMy/CodeMirror2,schanzer/CodeMirror,Aliccer/CodeMirror,DustinH/CodeMirror,Navaneethsen/CodeMirror,alur/CodeMirror,mizchi/CodeMirror,pinbe/CodeMirror,bocharsky-bw/CodeMirror,NumbersInternational/CodeMirror,isdampe/CodeMirror,sgoo/CodeMirror,vincentwoo/CodeMirror,antimatter15/CodeMirror,mtaran-google/CodeMirror,webida/CodeMirror,amshali/CodeMirror,Dominator008/CodeMirror,bluesh55/CodeMirror,antimatter15/CodeMirror,Allenice/CodeMirror,thomasjm/CodeMirror,ThebingServices/CodeMirror,bfrohs/CodeMirror,TDaglis/CodeMirror,anthonygego/CodeMirror,jessegrosjean/CodeMirror,wingify/CodeMirror,elisee/CodeMirror,jpolitz/CodeMirror,jansel/CodeMirror,antimatter15/CodeMirror,jansel/CodeMirror,ThebingServices/CodeMirror,skylarkcob/CodeMirror,MarcelGerber/CodeMirror,ashmind/CodeMirror,crazy4chrissi/CodeMirror,Jisuanke/CodeMirror,bfrohs/CodeMirror,dperetti/CodeMirror,pjkui/CodeMirror,namin/CodeMirror,happibum/CodeMirror-main,michaelerobertsjr/CodeMirror,namin/CodeMirror,ZombieHippie/CodeMirror,r7kamura/CodeMirror,isdampe/CodeMirror,nawroth/CodeMirror,amireh/codemirror,happibum/CodeMirror-main,mizchi/CodeMirror,vanloswang/CodeMirror,djadmin/CodeMirror,Navaneethsen/CodeMirror,Dominator008/CodeMirror,kangkot/CodeMirror,explorigin/CodeMirror,crazy4chrissi/CodeMirror,camellhf/CodeMirror,gkoberger/CodeMirror,AlanWasTaken/codemirror,bluesh55/CodeMirror,KamranMackey/CodeMirror,ZombieHippie/CodeMirror,morrisonwudi/CodeMirror,ssxxue/CodeMirror,mtaran-google/CodeMirror,grzegorzmazur/CodeMirror,amsul/CodeMirror,hackmdio/CodeMirror,vincentwoo/CodeMirror,codio/CodeMirror,karthikeyansam/CodeMirror,dudb/CodeMirror,davidpham87/CodeMirror,rasata/CodeMirror,qiankun007/CodeMirror,ficristo/CodeMirror,increpare/CodeMirror,kevinushey/CodeMirror,qweasd1/CodeMirror,belph/CodeMirror,webida/CodeMirror,ksanaforge/CodeMirror,kuangyeheng/CodeMirror,michaelerobertsjr/CodeMirror,sanyaade-iot/CodeMirror,morrisonwudi/CodeMirror,jochenberger/CodeMirror,axter/CodeMirror,nightwing/CodeMirror,abdelouahabb/CodeMirror,buchslava/CodeMirror,jayaprabhakar/CodeMirror,bocharsky-bw/CodeMirror,pinbe/CodeMirror,pabloferz/CodeMirror,kuangyeheng/CodeMirror,qiankun007/CodeMirror,anthonygego/CodeMirror,michaelerobertsjr/CodeMirror,shiren/CodeMirror,ksanaforge/CodeMirror,symbla/CodeMirror,alur/CodeMirror,TDaglis/CodeMirror,gkoberger/CodeMirror,anthonygego/CodeMirror,apatawari/CodeMirror,xeronith/CodeMirror,sourcelair/CodeMirror,jessegrosjean/CodeMirror,AlanWasTaken/codemirror,fmoliveira/CodeMirror,elisee/CodeMirror,NeZaMy/CodeMirror2,melpon/CodeMirror,wingify/CodeMirror,notepadqq/CodeMirror,notepadqq/CodeMirror,rustemferreira/CodeMirror,ThebingServices/CodeMirror,r7kamura/CodeMirror,loopspace/CodeMirror,symbla/CodeMirror,bocharsky-bw/CodeMirror,agendor/CodeMirror,karthikeyansam/CodeMirror,loopspace/CodeMirror,karthikeyansam/CodeMirror,sgoo/CodeMirror,jayaprabhakar/CodeMirror,isdampe/CodeMirror,jpolitz/CodeMirror,kk9599/CodeMirror,ashmind/CodeMirror,systay/CodeMirror,GerHobbelt/CodeMirror2,schanzer/CodeMirror,philuchansky/CodeMirror,supriyantomaftuh/CodeMirror,loopspace/CodeMirror,karevn/CodeMirror,flyskyko/CodeMirror,adobe/CodeMirror2,xeronith/CodeMirror,nightwing/CodeMirror,mihailik/CodeMirror,vanloswang/CodeMirror,NumbersInternational/CodeMirror,happibum/CodeMirror-main,skylarkcob/CodeMirror,shiren/CodeMirror,ashmind/CodeMirror,davidpham87/CodeMirror,matthewbauer/CodeMirror,melpon/CodeMirror,dudb/CodeMirror,grzegorzmazur/CodeMirror,wingify/CodeMirror,systay/CodeMirror,ficristo/CodeMirror,fpco/codemirror,d0liver/CodeMirror,matthewbauer/CodeMirror,jayaprabhakar/CodeMirror,CartoDB/CodeMirror,dbarnett/CodeMirror,buchslava/CodeMirror,cben/CodeMirror,tpphu/CodeMirror,ejgallego/CodeMirror,karevn/CodeMirror,rrandom/CodeMirror,dbarnett/CodeMirror,abdelouahabb/CodeMirror,bfrohs/CodeMirror,morrisonwudi/CodeMirror,manderson23/CodeMirror,alur/CodeMirror,EasonYi/CodeMirror,ejgallego/CodeMirror,hackmdio/CodeMirror,belph/CodeMirror,kolya-ay/CodeMirror,angelozerr/CodeMirror,nawroth/CodeMirror,supriyantomaftuh/CodeMirror,vanloswang/CodeMirror,jkaplon/CodeMirror,vincentwoo/CodeMirror,kangkot/CodeMirror,belph/CodeMirror,tpphu/CodeMirror,dudb/CodeMirror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