* Tweak - Consolidate multiple invoice and packing list settings into individual dropdown fields
* Fix - Prevent subcategories with the same name from being grouped with the same parent category on pick lists
* Fix - Fix customizer compatibility issues with the Twenty Twenty theme
* Dev - Add the `wc_pip_pick_list_table_order_heading` filter to allow pick list header customization when the output is set to group items by order for selected orders
