* Added an option to the live Product Search field that allows to sort results by SKU.
* Added the woocommerce_product_search_field_product_title filter.
* Added the woocommerce_product_search_field_product_description filter.
* Added the woocommerce_product_search_field_product_price_html filter.
* Added the woocommerce_product_search_field_product_add_to_cart_html filter.
* Fixed an issue with 404s obtained for filter requests directly on paginated results beyond the first page.
* Fixed an issue with no products obtained with paginated results beyond the first page with the [woocommerce_product_filter_products] shortcode.
* Fixed an issue where category or attribute filters rendered as dropdowns could end up disabled after applying a choice.
* Fixed potencial PHP notices on uninitialized widget instance attributes for the Product Search Field and Product Filter – Search widgets.
