move the async completer next to the classes which use it.
move the async completer next to the classes which use it.

willsALMANJ/vimium,Robinson10240/vimium,wildeyes/vimium,PrestanceDesign/vimium,bkudria/vimium,willsALMANJ/vimium,philc/vimium,csmalin/vimium,tuchangwei/vimium,smblott-github/vimium-smblott,mrmr1993/vimium,Aleroniponi/vimium,Robinson10240/vimium,elderbas/vimium,VPashkov/vimium,elegantwww/vimium,Aleroniponi/vimium,wildeyes/vimium,douglas-larocca/vimium,hhsue/vimium,borgified/vimium,decaffeinate-examples/vimium,crazypenguincode/vimium,justalittlenoob/vimium,poacher2k/vimium,tuchangwei/vimium,mrmr1993/vimium,PrestanceDesign/vimium,Aleroniponi/vimium,shaung/vimium,gdh1995/vimium,dimatter/vimium,crazypenguincode/vimium,elegantwww/vimium,PickRelated/vimium,gdh1995/vimium,PickRelated/vimium,smblott-github/vimium-smblott,borgified/vimium,decaffeinate-examples/vimium,wildeyes/vimium,hhsue/vimium,elegantwww/vimium,decaffeinate-examples/vimium,Robinson10240/vimium,hhsue/vimium,jb55/vimium-plus,smblott-github/vimium,cyrixhero/vimium,borgified/vimium,Lw-Cui/vimium,poacher2k/vimium,jb55/vimium-plus,elderbas/vimium,bkudria/vimium,philc/vimium,philc/vimium,smblott-github/vimium,mrmr1993/vimium,VPashkov/vimium,justalittlenoob/vimium,cyrixhero/vimium,zhangmin510/vimium,Lw-Cui/vimium,zhangmin510/vimium,douglas-larocca/vimium,gdh1995/vimium,zhangmin510/vimium,PrestanceDesign/vimium,VPashkov/vimium,csmalin/vimium,Lw-Cui/vimium,cyrixhero/vimium,dimatter/vimium,PickRelated/vimium,douglas-larocca/vimium,tuchangwei/vimium,elderbas/vimium,justalittlenoob/vimium,dimatter/vimium,poacher2k/vimium,willsALMANJ/vimium,bkudria/vimium,smblott-github/vimium,csmalin/vimium