WooCommerce Product Search 6.1.0

* Substantial performance improvements related to queries with large sets of products and terms.
* Fixed calculating product counts for terms with items that are out of stock.
* Improved hierarchical product counts to include counts from children.
* Improved performance on handling terms.
* Fixed redundant queries related to hit recording.
* Modified slider limit indicators to adjust to available range in context.

* Considerably improves the accuracy and performance of large product set searches on the back end when enabled.
* Added options to handle JSON product searches; introduced substantial performance improvements for those.
* Added the woocommerce_product_search_ext_product_data_store filter.
* Improvement to also index products with private post status so they can be included in back end search results.
* Added the WPS_EXT_PDS constant that enables the PDS override.

* Added the Spanish translation.
* Corrected some errors in descriptions.
* Fixed an issue that made the [woocommerce_product_filter_reset] shortcode inaccessible.
* Fixed translations were not loaded in time for widgets on the back end.
* Fixed incorrect img attributes generated for product tag filter thumbnails.