* New; support for WooCommerce 4.1
* Update: plugin framework
* Tweak: added category filter on brand grid shortcode
* Fix: improved method that checks whether coupon is valid for cart
* Dev: added new filter 'yith_wcbr_brand_filter_available_filters'
* Dev: added new filter 'yith_wcbr_csv_connection_importer_product_id'
* Dev: added new filter 'yith_wcbr_csv_connection_importer_term_id'