Add comment explaining why we use try/catch.
Add comment explaining why we use try/catch.

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