WP Simple Pay Pro (Personal) 4.5.1

* Fix: Ensure ID will result in simple-pay type before proceeding.
* Fix: Ensure Stripe Account ID exists before proceeding.

* New: Lite - add a 2% application fee to Checkout Sessions for new Stripe Connect connections.
* New: Show a notice when an expected webhook event has not been received. Improve webhook configuration UI.
* New: Stripe Checkout - Add support for collecting phone numbers.
* New: Show an alert when leaving unsaved changes on payment forms.
* New: Add "Copy to clipboard" buttons to payment form shortcodes and system report.
* New: Add an admin notice requesting a review after 14 days of installation/update.
* Fix: Update admin bar from "Simple Pay" to "WP Simple Pay".
* Fix: Avoid attempts at updating nonexistent elements.
* Fix: Avoid error when syncing coupons with a `redeem_by` date in the past.
* Dev: Update copyright dates.

* Fix: ACH Debit + Plaid: support OAuth for institutions that require it. Plaid account changes requied. Please review the documentation: Accepting ACH Debit Payments - WP Simple Pay Documentation
* Fix: Avoid `get_query_var()` usage within admin panel for better compatibility with other plugins.
* Fix: PHP `5.6.40` support when managing subscriptions.
* i18n: Update Romanian `ro_RO` translation.