WooCommerce Product Search 6.1.0

* WordPress 5 compatibility checked.
* Improved the Product Search Field structure making it more resilient and easily fitting in with themes.
* Fixed number of terms not being taken into account to limit product categories or product attributes.
* Improved the Queries report to show the initial sorting-indicator.
* The Product Search Field will try to maintain the chosen order when the search page is requested (Enter/more link).
* Added an option to the Product Search Field to allow for open order.
* Improved product tag counts: related product counts are adjusted based on the current filter context instead of showing the overall count.
* Improved the performance on handling taxonomy term counts.
* Fixed price slider handles not positioned according to mapping when values are updated via filter context.

* Added Jetpack compatibility with lazy image loading so it does not need to be disabled anymore.
* Added the woocommerce_product_search_signal_filter_response action to signal filter response handling.
* Checked WooCommerce 3.5 compatibility.
* Added the woocommerce_product_search_compat filter.
* Fixed issues with white space removal in accurate filter response optimization.
* Improved compacting with accurate filter response optimization.
* Using only simple filter response optimization by default to assure higher compatibility rate.

* New feature added - flexible dropdowns as style options for category and attribute filters.
* New feature added - create custom shop sections with preselected product categories, tags or attributes.
* New feature added - use context to create customized shop pages showing products from certain categories, tags, attributes etc. only.
* Improved options and debugging info for theme compatibility.
* Added Storefront compatibility features so the handheld footer brings handles the search field and live results correctly.
* Fixed an issue with incorrect parameters submitted to filter request when empty multiple select was used.
* Added the woocommerce_product_search_selectize_css filter.
* Added the woocommerce_product_search_term_node_select_padding_step filter.
* Fixed term counts were not taking all subterms into account.
* Added the woocommerce_product_search_term_node_select_render_count filter.
* Improved the logic when several instances of the same filter are present to use some single key factors from the triggering element only.
* Fixed an issue where updating URL query args was not removing all previous parameter pairs.
* Fixed loading (progress) indicator gone when launching multiple filter requests.
* Added taxonomy, term and taxonomy_op to the available attributes the woocommerce_product_filter_products shortcode and the corresponding API function.
* Added the [woocommerce_product_search_filter_context] shortcode.
* Improved empty selects and dropdowns so they/their widgets are automatically toggled.
* Added individual options to toggle widgets and components when no eligible options are present in category, attribute and tag filters.
* Added a console warning when the general products container is not found.
* Added a console warning when the individual product containers are not found.
* Added the option to set the individual product container selector.
* Improved search handling for languages like Chinese.
* Fixed cases where queries on custom post types with a product taxonomy query part were filtered by mistake.