[refactoring] begin core refactoring, starting w/ handle
[refactoring] begin core refactoring, starting w/ handle

sensu/sensu,miyakawataku/sensu,pauloconnor/sensu,m4ce/sensu,yonglehou/sensu,keymone/sensu,bf4/sensu,solarkennedy/sensu,withnale/sensu,roobert/sensu,upfluence/sensu,rbramwell/sensu,cread/sensu,npe9/sensu,crewton/sensu,somic/sensu,portertech/sensu