[xml-hint] Move from .substr to .slice for old-IE compat, fix offset bug
[xml-hint] Move from .substr to .slice for old-IE compat, fix offset bug

Closes #692

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