* Add - Approval instruction to the email sent to store owner when new vendors submit applications.
* Add - Approve action to approve pending vendors from the user list table.
* Add - If a customer leaves notes when placing an order, show those notes in the vendor emails and the vendor order dashboard.
* Fix - Add customer's billing address to the vendor notification emails.
* Fix - Ensure our query filter only runs on the main query.
* Fix - Use an integer for the menu position to avoid conflicts with other menus.
* Tweak - WC 5.4 compatibility.
* Tweak - WP 5.7 compatibility.
