Point of Sale for WooCommerce 6.4.0

* Fix - products with no POS visibility did not show on web store.
* Fix - cannot open some registers from My Account page.
* Fix - login screen shows duplicate users when using custom roles.
* Fix - error while loading coupons with duplicate codes.
* Fix - issue with non-Latin product attribute slugs.
* Fix - save customer billing name to the WordPress user profile.
* Fix - cannot change / add or remove register logo.
* Fix - disable keyboard shortcuts on input elements.
* Fix - error if a register post has no date of creation in DB.
* Fix - hold button is always showing.
* Fix - product variations with 0 price were not displaying on grid.
* Fix - remove 'http://' from outlet website URL on reciepts.
* Fix - barcode on receipt was only generated for the first copy when multiple copies are set.
* Fix - console error if shipping is disabled.
* Tweak - WC 4.9.0 compatibility.
* Tweak - tweak to email validation when entering customer details.

* Fix - keyboard shortcuts not working when scan mode is enabled.
* Fix - cashier tender options affected after database updates.
* Fix - unused attribute not hidden if its the first one.
* Fix - cannot add non-published custom products from the register.
* Fix - products with stock quantity less than 1 cannot be added to cart.
* Tweak - improve product grid scrolling behaviour.
* Feature - set custom logo for the register screen.
* Feature - option to set maximum concurrent requests.
* Feature - set default search or scan mode for the register.
* Feature - option to include product attributes in product search parameters.

* Fix - remove obsolete init hook that affected performance.
* Fix - product search did not return all matches.
* Fix - order contact details links were not working on the regisers order details page.
* Fix - logo size is not respected when configuring receipt template.
* Fix - tax rates and shipping methods could not be loaded when logged in as clerk.
* Fix - cannot reset user outlets.
* Tweak - add transient to cache product meta keys.
* Tweak - highlight product card if item is already in the registers basket.
* Feature - set suggested amounts when adding UoM products.
* Feature - scan EAN-13 and UPC-A weight or price embedded barcodes from the register.
* Feature - scan product SKU code when adding new product from the register.