check for cleaned up references in listenToOnce with stopListening
check for cleaned up references in listenToOnce with stopListening

nikolas/backbone,amitpatange88/backbonejs,sitexa/backbone,kuychaco/backbone,yawenl/backbone,aihua/backbone,ntgn81/backbone,gougouGet/backbone,youprofit/backbone,chyeh727/backbone,neocotic/hipbone,zhoufan879/backbone,rashmisajjan/backbone,wjb12/backbone,tibic/backbone,embarknow/backbone,linalu1/backbone,jashkenas/backbone,akre54/backbone,tzkKrbys/backbone,closeio/backbone,alekskorolev/lightbones,zdespolit/backbone,premkumargithub/backbone,tzkKrbys/backbone,akre54/backbone,Krasnyanskiy/backbone,embarknow/backbone,tadwhitaker/backbone,GrimDerp/backbone,webcoding/backbone,mrblueblue/backbone,darrrk/backbone,JesseQin/backbone,howtolearntocode/backbone,gmaclennan/backbone,jashkenas/backbone,ThiagoGarciaAlves/backbone,cgvarela/backbone,feychenie/backbone,streamablevideo/backbone,anhtholee/backbone,JesseQin/backbone,Krasnyanskiy/backbone,Flip120/backbone,neocotic/hipbone,wangdahoo/backbone,timebackzhou/backbone,moccen/backbone,craigmichaelmartin/backbone,Niades/backbone,Bug2014/backbone,moimikey/backbone,leimd/backbone,nikolas/backbone,ereddate/backbone,sumyfly/backbone,wangdahoo/backbone,huanglp47/backbone,ereddate/backbone,heroazure/backbone,au-phiware/backbone,wxmfront/backbone,pandoraui/backbone,huanglp47/backbone,jridgewell/backbone,howtolearntocode/backbone,ywenjinlin/backbone,GrimDerp/backbone,moccen/backbone,liudianpeng/backbone,closeio/backbone,pandoraui/backbone,ohbarye/backbone,jungjung917/backbone,craigmichaelmartin/backbone,sunday-star/backbone,liudianpeng/backbone,wushuyi/backbone,sueyeh/backbone,sumyfly/backbone,7213/backbone,tadwhitaker/backbone,Diwahars/backbone,zhoufan879/backbone,lastjune/backbone,oss-practice/backbone,trizko/backbone,gougouGet/backbone,rashmisajjan/backbone,vincent1988/backbone,feychenie/backbone,au-phiware/backbone,leimd/backbone,Connectlegendary/backbone,elancom/backbone,paulfalgout/backbone,wangcan2014/backbone,zhangwei001/backbone,dak/backbone,IsoldaJS/isolda-pubsub,wushuyi/backbone,amitpatange88/backbonejs,braddunbar/backbone,wxmfront/backbone,cgvarela/backbone,elancom/backbone,sitexa/backbone,sunday-star/backbone,guigrpa/backbone,elma-cao/backbone,vincent1988/backbone,nvoron23/backbone,ppker/backbone,aihua/backbone,tibic/backbone,cailong1028/backbone,jungjung917/backbone,IsoldaJS/isolda-models,zhangdimelody/backbone,fanhc019/backbone,Diwahars/backbone,wangcan2014/backbone,lastjune/backbone,ThiagoGarciaAlves/backbone,Sachin-Ganesh/backbone,DannyDelott/backbone,linalu1/backbone,megawac/backbone,nvoron23/backbone,ppker/backbone,vin100bk/backbone,jridgewell/backbone,lujocom/backbone,zhangdimelody/backbone,paulfalgout/backbone,wjb12/backbone,jewsroch/backbone,sueyeh/backbone,Flip120/backbone,heroazure/backbone,FishbaitHarry/backbone,jmeas/backbone,ridixcr/backbone,dcheepurupalli/backbone,platinumazure/backbone,chyeh727/backbone,elma-cao/backbone,yuhualingfeng/backbone,dcheepurupalli/backbone,dak/backbone,lujocom/backbone,Connectlegendary/backbone,jewsroch/backbone,Bug2014/backbone,premkumargithub/backbone,Niades/backbone,zhangwei001/backbone,moimikey/backbone,braddunbar/backbone,zgl2007dj/backbone,streamablevideo/backbone,youprofit/backbone,fanhc019/backbone,darrrk/backbone,guahanweb/backbone,gmaclennan/backbone,zdespolit/backbone,Sachin-Ganesh/backbone,ntgn81/backbone,alekskorolev/lightbones,timebackzhou/backbone,platinumazure/backbone,vin100bk/backbone,webcoding/backbone,anhtholee/backbone,gdi2290/backbone,FishbaitHarry/backbone,guahanweb/backbone,ridixcr/backbone,jmeas/backbone,getshuvo/backbone,kuychaco/backbone,DannyDelott/backbone,mrblueblue/backbone,yuhualingfeng/backbone,7213/backbone,cailong1028/backbone,udhayam/backbone,ywenjinlin/backbone,zgl2007dj/backbone,ohbarye/backbone,udhayam/backbone,getshuvo/backbone,yawenl/backbone,trizko/backbone