YITH WooCommerce Ajax Product Filter Premium 5.10.0

* New: Support for WooCommerce 3.9
* Fix: Missing current tag in Stock and On sale filter
* Fix: Not updating filters when the customer apply a filter by price

* Tweak: Prevent plugin query in non WooCommerce pages on frontend
* Update: plugin framework
* Fix: Removed error log
* Fix: Variable $li_printend undefined on frontend

New: Support for WordPress 5.3
New: Support for WooCommerce 3.8
Update: plugin framework
Fix: Typo in Product Tag taxonomy
Fix: Call get_query_object() on null
Fix: Hierarchical style for category widget with Flatsome theme
Fix: Current category filter style issue for hierarchical categories
Fix: Wrong margin left in price filter
Fix: dropdown feature doesn't work for WooCommerce Price Filter
Fix: woocommerce price filter does not work without slider feature
Dev: New filter 'yith_wcan_skip_check_on_product_in_term'