Checking for MutationObserver not in global
Checking for MutationObserver not in global

At the moment the scheduler checks MutationObserver and then assigning global.MutationObserver - causes a lot of fun in IE 11 extensions.
fadzlan/bluebird,atom-morgan/bluebird,jozanza/bluebird,Scientifik/bluebird,HBOCodeLabs/bluebird,Zeratul5/bluebird,HBOCodeLabs/bluebird,ankushg/bluebird,kidaa/bluebird,jozanza/bluebird,TechnicalPursuit/bluebird,alubbe/bluebird,xbenjii/bluebird,wainage/bluebird,cgvarela/bluebird,RobinQu/bluebird,timnew/bluebird,abhishekgahlot/bluebird,lindenle/bluebird,code-monkeys/bluebird,arenaonline/bluebird,cgvarela/bluebird,matklad/bluebird,cgvarela/bluebird,esco/bluebird,ricardo-hdz/bluebird,ronaldbaltus/bluebird,n1kolas/bluebird,johnculviner/bluebird,haohui/bluebird,STRML/bluebird,johnculviner/bluebird,Zeratul5/bluebird,angelxmoreno/bluebird,justsml/bluebird,javraindawn/bluebird,dantheuber/bluebird,code-monkeys/bluebird,rrpod/bluebird,codevlabs/bluebird,bsiddiqui/bluebird,kidaa/bluebird,StefanoDeVuono/bluebird,BridgeAR/bluebird,mcanthony/bluebird,code-monkeys/bluebird,goopscoop/bluebird,ricardo-hdz/bluebird,kjvalencik/bluebird,angelxmoreno/bluebird,reggi/bluebird,goopscoop/bluebird,bjonica/bluebird,kidaa/bluebird,akinsella/bluebird,bsiddiqui/bluebird,garysye/bluebird,xdevelsistemas/bluebird,paulcbetts/bluebird,xdevelsistemas/bluebird,mdarveau/bluebird,briandela/bluebird,impy88/bluebird,soyuka/bluebird,spion/bluebird,Scientifik/bluebird,JaKXz/bluebird,illahi0/bluebird,gillesdemey/bluebird,lo1tuma/bluebird,linalu1/bluebird,ronaldbaltus/bluebird,ajitsy/bluebird,gillesdemey/bluebird,cwhatley/bluebird,janmeier/bluebird,henryqdineen/bluebird,mdarveau/bluebird,joemcelroy/bluebird,vladikoff/bluebird,spion/bluebird,ryanwholey/bluebird,developmentstudio/bluebird,Wanderfalke/bluebird,javraindawn/bluebird,angelxmoreno/bluebird,whatupdave/bluebird,developmentstudio/bluebird,davyengone/bluebird,starkwang/bluebird,jozanza/bluebird,alubbe/bluebird,lindenle/bluebird,robertn702/bluebird,fmoliveira/bluebird,P-Seebauer/bluebird,janmeier/bluebird,techniq/bluebird,perfecting/bluebird,peterKaleta/bluebird,migclark/bluebird,peterKaleta/bluebird,goofiw/bluebird,moretti/bluebird,perfecting/bluebird,peterKaleta/bluebird,mdarveau/bluebird,naoufal/bluebird,iarna/promisable-bluebird,JaKXz/bluebird,cwhatley/bluebird,mcanthony/bluebird,RobinQu/bluebird,ziad-saab/bluebird,migclark/bluebird,amelon/bluebird,xdevelsistemas/bluebird,codevlabs/bluebird,tesfaldet/bluebird,developmentstudio/bluebird,soyuka/bluebird,ydaniv/bluebird,arenaonline/bluebird,petkaantonov/bluebird,sequelize/bluebird,robertn702/bluebird,ydaniv/bluebird,djchie/bluebird,kjvalencik/bluebird,cusspvz/bluebird,techniq/bluebird,justsml/bluebird,amelon/bluebird,enicolasWebs/bluebird,davyengone/bluebird,abhishekgahlot/bluebird,linalu1/bluebird,bjonica/bluebird,wainage/bluebird,henryqdineen/bluebird,TechnicalPursuit/bluebird,janzal/bluebird,javraindawn/bluebird,kjvalencik/bluebird,DrewVartanian/bluebird,robertn702/bluebird,impy88/bluebird,avinoamr/bluebird,vladikoff/bluebird,linalu1/bluebird,starkwang/bluebird,ryanwholey/bluebird,whatupdave/bluebird,xbenjii/bluebird,fmoliveira/bluebird,RobinQu/bluebird,Zeratul5/bluebird,ziad-saab/bluebird,HBOCodeLabs/bluebird,reggi/bluebird,fmoliveira/bluebird,BigDSK/bluebird,xbenjii/bluebird,cusspvz/bluebird,whatupdave/bluebird,tesfaldet/bluebird,alubbe/bluebird,BridgeAR/bluebird,tesfaldet/bluebird,dantheuber/bluebird,henryqdineen/bluebird,sequelize/bluebird,satyadeepk/bluebird,joemcelroy/bluebird,naoufal/bluebird,akinsella/bluebird,bsiddiqui/bluebird,enicolasWebs/bluebird,abhishekgahlot/bluebird,lo1tuma/bluebird,bjonica/bluebird,tpphu/bluebird,satyadeepk/bluebird,garysye/bluebird,joemcelroy/bluebird,P-Seebauer/bluebird,impy88/bluebird,enicolasWebs/bluebird,BigDSK/bluebird,BridgeAR/bluebird,petkaantonov/bluebird,BigDSK/bluebird,sandrinodimattia/bluebird,arenaonline/bluebird,STRML/bluebird,avinoamr/bluebird,atom-morgan/bluebird,tpphu/bluebird,goofiw/bluebird,lindenle/bluebird,ziad-saab/bluebird,esco/bluebird,vladikoff/bluebird,rrpod/bluebird,reggi/bluebird,codevlabs/bluebird,ankushg/bluebird,DeX3/bluebird,sandrinodimattia/bluebird,TechnicalPursuit/bluebird,DrewVartanian/bluebird,ScheerMT/bluebird,atom-morgan/bluebird,starkwang/bluebird,paulcbetts/bluebird,dantheuber/bluebird,n1kolas/bluebird,fadzlan/bluebird,satyadeepk/bluebird,ricardo-hdz/bluebird,ryanwholey/bluebird,moretti/bluebird,DeX3/bluebird,perfecting/bluebird,Scientifik/bluebird,illahi0/bluebird,StefanoDeVuono/bluebird,a25patel/bluebird,techniq/bluebird,P-Seebauer/bluebird,briandela/bluebird,JaKXz/bluebird,matklad/bluebird,garysye/bluebird,moretti/bluebird,mcanthony/bluebird,tpphu/bluebird,akinsella/bluebird,ajitsy/bluebird,timnew/bluebird,johnculviner/bluebird,haohui/bluebird,StefanoDeVuono/bluebird,sequelize/bluebird,illahi0/bluebird,sandrinodimattia/bluebird,cusspvz/bluebird,justsml/bluebird,soyuka/bluebird,haohui/bluebird,paulcbetts/bluebird,a25patel/bluebird,a25patel/bluebird,ronaldbaltus/bluebird,petkaantonov/bluebird,rrpod/bluebird,fadzlan/bluebird,janmeier/bluebird,goofiw/bluebird,yonjah/bluebird,DeX3/bluebird,n1kolas/bluebird,djchie/bluebird,yonjah/bluebird,djchie/bluebird,ydaniv/bluebird,ScheerMT/bluebird,briandela/bluebird,ajitsy/bluebird,Wanderfalke/bluebird,ScheerMT/bluebird,davyengone/bluebird,Wanderfalke/bluebird,cwhatley/bluebird,janzal/bluebird,naoufal/bluebird,lo1tuma/bluebird,matklad/bluebird,avinoamr/bluebird,DrewVartanian/bluebird,timnew/bluebird,janzal/bluebird,gillesdemey/bluebird,ankushg/bluebird,STRML/bluebird,migclark/bluebird,amelon/bluebird,wainage/bluebird,yonjah/bluebird,esco/bluebird,goopscoop/bluebird