Feature-detect zero-width space support
Feature-detect zero-width space support

Apparently Opera Win *doesn't* handle them properly, whereas Opera
Linux does.

Closes #929

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