Product Filter for WooCommerce 9.1.1

+ fixed advanced, meta and range filters not adding
+ fixed advanced and meta filters includes
+ fixed most ordering issues
+ fixed most missing filters issues
+ fixed characteristics clearing

- fixed shortcodes and admin side saving fatal error
- fixed 6.0.0 instock filters bugs
- fixed validated javascript files on JSHint, a JavaScript Code Quality Tool

- added meta filters! woocommerce extra product options and advanced custom fields plugins are now supported! including already existing product meta like total_sales, _featured, _downloadable, _width, _length, _height, _weight, _sku, _wc_review_count, _wc_average_rating! find more information in the documentation
- added reset all options
- added full support for instock/outofstock, out of stock treshold, better support for stock quantity, backorders are now out of stock and should be a lot faster!
- added full support for customizations and hierarchy! hierarchy in colors, thumbnails and other customized filters!
- added hierarchy support in admin filter include terms
- added option not to relocate adoptive terms
- added option not to relocate selected terms
- added better support for selectbox filter type (selected in title)
- improved and fixed analytics, sale, instock, fixed multiselect taxonomy, price, orderby
- improved installation and advanced options UI
- improved documentation, new flatsome AJAX installation, media center theme support, meta filters explained
- improved and optimized product-filter.php template
- improved german translation and added partial russian translation
- fixed order by newness bugs
- fixed most pagination bugs and issues
- fixed remove ? from empty /shop/
- fixed non ajax deselecting taxonomy terms and multiple filters
- fixed visible widgets on activation
- fixed redirect issues on multi select filters
- fixed step filter redirect button is now visible before search
- fixed strict standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method wc_prdctfltr_shortcodes:rdctfltr_pagination_filter()
- fixed warning: invalid argument supplied for foreach() in /prdctfltr/lib/pf-settings.php on line 3267
- fixed prdct_main.js:1040
- fixed notice: undefined index: hierarchy in /prdctfltr/woocommerce/loop/product-filter.php on line 1620