Summary

I think it would be useful to separate out the onSubmit logic inside the Form component into it's own method.
However, it seems like this library is planned on being rewritten soon so maybe this is just something to think about for that.

Motivation:

Using multiple submit type actions seems more complicated then needed
Current Options (Maybe there are better ways)

1. Attach values to the submitter button/input and read those values in the onSubmit event handler.
2. Rewrite the code in the onSubmit function.

Implentation

1. Add a new method like handleSubmit(form,onSubmit,options?,event?)
2. Method essentially is essentially the same except how to handle event object
3. Call this method from the Form Component onSubmit event handler, and pass the event object

Example

<Form>
  <Field>...</Field>

  <button onclick={() =>
      handleSubmit(form, (values) => console.log(values), { ...options1 })
  }>
    Action 1
  </button>
  <button onclick={() =>
      handleSubmit(form, (values) => console.warn(values), { ...options2 })
  }>
    Action 2
  </button>
</Form>

Love the library and thanks for the work.
I can work on a PR if needed (This would be my first time)