WOOF - WooCommerce Products Filter

Update WooCommerce Products Filter v.2.1.8

Small fixes and incompatibilities with woocommerce 3.2.x
New extension: Quick Search
- https://products-filter.com/shortcode/woof_quick_search/
- https://products-filter.com/shortcode/woof_quick_search_results/
New extension: Featured products
New hook: woof_template_part
New hook: woof_ext_custom_title_XXX
New hook: woof_counter_method