## README: Fix eager execution/challenge of reCAPTCHA V2

When a reCAPTCHA field is configured as "invisible", Ninja Forms will execute `grecaptcha.execute()` when the form is rendered and in intervals of 110 seconds, regardless of the form's state. If reCAPTCHA determines a challenge is necessary, its appearance on page load is unexpected and confusing, and its potential recurrence is very annoying for users.

This patch replaces the interval callback with a more complex solution that involves interrupting the form submit with a temporary validation error (that displays "Processing…" error). When reCAPTCHA is done (checks and challenges completed), the temporary validation error is removed and the form is submitted to the server for final validation.

If you use Ninja Forms Multi-Part, you will have to remove its reCAPTCHA controller which is no longer needed with this patch.

Apply the following patches:

* Ninja Forms: `nf-front-end-deps.js.diff`
* Ninja Forms Multi-Part: `nf-mp-front-end.js.diff`

Ideally, Ninja Forms would implement support for a promise-based solution to allow for controllers to take their time with whatever needs to be processed.

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