prevent async-image listeners from leaking scope from handlers
prevent async-image listeners from leaking scope from handlers

runspired/ember-radar,html-next/vertical-collection,ssendev/smoke-and-mirrors,html-next/vertical-collection,runspired/ember-radar,ssendev/smoke-and-mirrors,runspired/smoke-and-mirrors,runspired/smoke-and-mirrors,html-next/vertical-collection