Throw exception when adding a pane item that has already been destroyed
Throw exception when adding a pane item that has already been destroyed

Closes atom/bracket-matcher#178

gzzhanghao/atom,helber/atom,ardeshirj/atom,panuchart/atom,liuderchi/atom,jordanbtucker/atom,t9md/atom,gontadu/atom,gontadu/atom,ardeshirj/atom,yamhon/atom,originye/atom,AlisaKiatkongkumthon/atom,anuwat121/atom,bencolon/atom,AlexxNica/atom,kevinrenaers/atom,Austen-G/BlockBuilder,svanharmelen/atom,dijs/atom,florianb/atom,001szymon/atom,AdrianVovk/substance-ide,beni55/atom,florianb/atom,fscherwi/atom,Austen-G/BlockBuilder,seedtigo/atom,kaicataldo/atom,Jonekee/atom,g2p/atom,wiggzz/atom,niklabh/atom,helber/atom,bj7/atom,darwin/atom,beni55/atom,Rychard/atom,nucked/atom,darwin/atom,AlisaKiatkongkumthon/atom,Huaraz2/atom,Rodjana/atom,DiogoXRP/atom,alfredxing/atom,scippio/atom,florianb/atom,originye/atom,AlisaKiatkongkumthon/atom,ivoadf/atom,stuartquin/atom,kandros/atom,g2p/atom,Jonekee/atom,Jonekee/atom,johnhaley81/atom,sotayamashita/atom,medovob/atom,Huaraz2/atom,AlexxNica/atom,pkdevbox/atom,palita01/atom,transcranial/atom,seedtigo/atom,niklabh/atom,nucked/atom,FIT-CSE2410-A-Bombs/atom,RuiDGoncalves/atom,Locke23rus/atom,G-Baby/atom,Sangaroonaom/atom,bsmr-x-script/atom,jordanbtucker/atom,Arcanemagus/atom,ObviouslyGreen/atom,Ingramz/atom,kaicataldo/atom,tjkr/atom,atom/atom,johnhaley81/atom,boomwaiza/atom,efatsi/atom,wiggzz/atom,tjkr/atom,Rodjana/atom,brettle/atom,PKRoma/atom,cyzn/atom,dijs/atom,gzzhanghao/atom,panuchart/atom,tanin47/atom,chfritz/atom,t9md/atom,AdrianVovk/substance-ide,Austen-G/BlockBuilder,Klozz/atom,tmunro/atom,AlbertoBarrago/atom,yangchenghu/atom,Rychard/atom,daxlab/atom,hellendag/atom,dijs/atom,johnrizzo1/atom,tjkr/atom,alfredxing/atom,efatsi/atom,ironbox360/atom,yangchenghu/atom,mdumrauf/atom,bolinfest/atom,liuderchi/atom,panuchart/atom,ykeisuke/atom,ykeisuke/atom,mrodalgaard/atom,ashneo76/atom,DiogoXRP/atom,gzzhanghao/atom,decaffeinate-examples/atom,anuwat121/atom,champagnez/atom,stinsonga/atom,scippio/atom,Mokolea/atom,darwin/atom,chfritz/atom,niklabh/atom,helber/atom,AlexxNica/atom,tanin47/atom,bsmr-x-script/atom,sotayamashita/atom,johnrizzo1/atom,stuartquin/atom,lpommers/atom,nucked/atom,Klozz/atom,mdumrauf/atom,bj7/atom,xream/atom,folpindo/atom,brumm/atom,Locke23rus/atom,anuwat121/atom,tanin47/atom,brettle/atom,Rodjana/atom,medovob/atom,xream/atom,yamhon/atom,pengshp/atom,andrewleverette/atom,rlugojr/atom,seedtigo/atom,daxlab/atom,CraZySacX/atom,bencolon/atom,gabrielPeart/atom,mdumrauf/atom,johnhaley81/atom,Klozz/atom,liuderchi/atom,AdrianVovk/substance-ide,pengshp/atom,CraZySacX/atom,nrodriguez13/atom,pkdevbox/atom,pengshp/atom,cyzn/atom,001szymon/atom,me-benni/atom,DiogoXRP/atom,kandros/atom,001szymon/atom,tmunro/atom,alfredxing/atom,brumm/atom,G-Baby/atom,Arcanemagus/atom,stuartquin/atom,AlbertoBarrago/atom,originye/atom,rookie125/atom,Austen-G/BlockBuilder,PKRoma/atom,brumm/atom,Sangaroonaom/atom,rlugojr/atom,ykeisuke/atom,jordanbtucker/atom,wiggzz/atom,florianb/atom,kaicataldo/atom,stinsonga/atom,mrodalgaard/atom,scippio/atom,yamhon/atom,kevinrenaers/atom,PKRoma/atom,transcranial/atom,florianb/atom,folpindo/atom,brettle/atom,me-benni/atom,kandros/atom,gabrielPeart/atom,stinsonga/atom,hellendag/atom,rookie125/atom,cyzn/atom,Austen-G/BlockBuilder,t9md/atom,andrewleverette/atom,AlbertoBarrago/atom,bolinfest/atom,boomwaiza/atom,nrodriguez13/atom,gontadu/atom,lpommers/atom,johnrizzo1/atom,tmunro/atom,svanharmelen/atom,alexandergmann/atom,boomwaiza/atom,chfritz/atom,bolinfest/atom,palita01/atom,nrodriguez13/atom,Sangaroonaom/atom,ashneo76/atom,ObviouslyGreen/atom,Austen-G/BlockBuilder,ardeshirj/atom,Mokolea/atom,gabrielPeart/atom,kevinrenaers/atom,svanharmelen/atom,beni55/atom,yangchenghu/atom,G-Baby/atom,ivoadf/atom,Huaraz2/atom,decaffeinate-examples/atom,Ingramz/atom,sotayamashita/atom,jeremyramin/atom,bsmr-x-script/atom,folpindo/atom,liuderchi/atom,jeremyramin/atom,Mokolea/atom,jeremyramin/atom,bencolon/atom,atom/atom,medovob/atom,pkdevbox/atom,stinsonga/atom,fscherwi/atom,g2p/atom,hellendag/atom,ashneo76/atom,champagnez/atom,ironbox360/atom,lpommers/atom,me-benni/atom,alexandergmann/atom,FIT-CSE2410-A-Bombs/atom,champagnez/atom,ivoadf/atom,decaffeinate-examples/atom,RuiDGoncalves/atom,palita01/atom,efatsi/atom,Locke23rus/atom,ironbox360/atom,xream/atom,rookie125/atom,decaffeinate-examples/atom,mrodalgaard/atom,RuiDGoncalves/atom,atom/atom,fscherwi/atom,andrewleverette/atom,alexandergmann/atom,daxlab/atom,bj7/atom,Arcanemagus/atom,FIT-CSE2410-A-Bombs/atom,Rychard/atom,rlugojr/atom,Ingramz/atom,CraZySacX/atom,ObviouslyGreen/atom,transcranial/atom