v1.0.2

• FlowView: the persist function is now persistToggle. The old prop
  onToggle is also the handler Vue calls for the emitted toggle event, so
  a host's persist function ran twice per switch (two requests), and a
  rejection on the emit path surfaced as an unhandled error. persistToggle
  is called exactly once per switch; a rejection rolls the switch back with
  an error toast and toggle-error, as before.
• toggle fires once, after the persist function settles (at once
  without one), with a second argument ToggleResult: { ok: true } or
  { ok: false, error, rolledBack }. It used to fire optimistically before
  the request.
• Deprecated: onToggle as the persist function, kept until 1.1. Without
  persistToggle, a function passed as onToggle (or as an @toggle
  listener — the same vnode prop) is still the persist function, called once,
  with the rollback; the toggle event is then not emitted, since it would
  call it again. From 1.1 onToggle is only the toggle listener.
• New exported types ToggleResult and PersistToggle.
• FlowEditor has no function prop that collides with an event; unchanged.