Updates for v1.2.6

[ianhalpern]

Description

The main update is to expose the Payload.js Form.submit function. This allows direct control of the form submission trigger. For example:

function Checkout() {
  const formRef = useRef(null);

  const manualFormSubmit = async () => {
    try {
       const result = await formRef.current.submit()
       console.log('SUCCESS', result)
    } catch(e) {
       console.log('ERROR', e.data)
    }
  }

  return <div>
    <PaymentForm ref={formRef}>
      <Card/>
    </PaymentForm>
    <button type="button" onClick={manualFormSubmit}>Submit</button>
  </div>
}

Changes include:

• Exposed Payload.js Form.submit function
• Forwarded ref for higher order form components (PaymentForm and PaymentMethodForm)
• Fixed issue with payment and paymentMethod props not updating on rerender
• Added docstrings to components and functions
• Delay initalizePayload until clientToken and Payload.js are present
• Enable onInvalid/Valid on standard inputs
• Added docstrings to components and functions

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)