Clear all keydown events that correspond to a keyup event
Clear all keydown events that correspond to a keyup event

Lw-Cui/vimium,dimatter/vimium,douglas-larocca/vimium,bkudria/vimium,Aleroniponi/vimium,VPashkov/vimium,csmalin/vimium,elegantwww/vimium,hhsue/vimium,Lw-Cui/vimium,tuchangwei/vimium,willsALMANJ/vimium,decaffeinate-examples/vimium,douglas-larocca/vimium,douglas-larocca/vimium,elegantwww/vimium,willsALMANJ/vimium,tuchangwei/vimium,Aleroniponi/vimium,willsALMANJ/vimium,VPashkov/vimium,PickRelated/vimium,zhangmin510/vimium,cyrixhero/vimium,mrmr1993/vimium,Robinson10240/vimium,cyrixhero/vimium,borgified/vimium,borgified/vimium,dimatter/vimium,borgified/vimium,hhsue/vimium,Robinson10240/vimium,smblott-github/vimium,philc/vimium,justalittlenoob/vimium,PrestanceDesign/vimium,csmalin/vimium,tuchangwei/vimium,cyrixhero/vimium,decaffeinate-examples/vimium,gdh1995/vimium,smblott-github/vimium,bkudria/vimium,Lw-Cui/vimium,PickRelated/vimium,justalittlenoob/vimium,bkudria/vimium,philc/vimium,mrmr1993/vimium,wildeyes/vimium,wildeyes/vimium,hhsue/vimium,gdh1995/vimium,VPashkov/vimium,PrestanceDesign/vimium,elegantwww/vimium,PrestanceDesign/vimium,gdh1995/vimium,wildeyes/vimium,smblott-github/vimium,elderbas/vimium,elderbas/vimium,zhangmin510/vimium,crazypenguincode/vimium,mrmr1993/vimium,csmalin/vimium,dimatter/vimium,poacher2k/vimium,philc/vimium,poacher2k/vimium,elderbas/vimium,Robinson10240/vimium,Aleroniponi/vimium,poacher2k/vimium,justalittlenoob/vimium,PickRelated/vimium,decaffeinate-examples/vimium,crazypenguincode/vimium,zhangmin510/vimium