Point of Sale for WooCommerce 6.3.0

* Tweak - WC 4.3.2 compatibility.
* Tweak - delayed timer for printing of receipt.
* Tweak - show spinner until users are loaded in the login screen.
* Fix - certain cashiers were not showing in login screen.
* Fix - front-end access does not work if "My Account" page is set to homepage.
* Fix - enable currency rounding not working.
* Fix - check_wc_rest_api() fails if User-Agent is not set.
* Fix - fatal errors if registers deleted from the database directly.
* Fix - signature pad not working.

Feature – support WC Sequential Order Numbers Pro by SkyVerge.
Feature – add BACS and Check payment methods.
Tweak – allow adding free products.
Fix – products not loading correctly.
Fix – login screen not showing users.
Fix – error when adding variable products.
Fix – print modal does not appear in some cases.

Tweak – indicators when fetching coupons from store.
Fix – refactor security permissions for Clerk and Outlet Manager roles.
Fix – refactor cash tendering payment method.
Fix – calling incorrect function for receipt header.
Fix – refactor settings for customer required fields.