message: fix(show): prevent transitions from starting on change truthy values
  Closes
diff: @@ -27,7 +27,7 @@ export default {
  update (el: any, { value, oldValue }: VNodeDirective, vnode: VNodeWithData) {
  /* istanbul ignore if */
  - if (value === oldValue) return
  + if (!value === !oldValue) return
  vnode = locateNode(vnode)
  const transition = vnode.data && vnode.data.transition
  if (transition) {
  