* Fix - When orders have refunds, display the correct quantity for the same items in Pick Lists
* Fix - Keep listing deleted products in Pick Lists and Packing Lists (behavior can be toggled via filter hook)
* Fix - When grouping items by category in pick lists, ensure that items belonging to categories whose names do not match their slugs, are not accidentally grouped as "Uncategorized"
* Fix - Prevent WooCommerce from sending duplicated emails while updating an order from admin and clicking on the update button with an email order action selected, instead of using the order action button
