YITH WooCommerce Badge Management Premium 3.12.0

* New: support for WordPress 5.6
* New: support for WooCommerce 4.8
* Update: plugin framework
* Update: language files
* Fix: support for YITH WooCommerce Dynamic Pricing and Discounts
* Fix: badge positioning issue in combination with Proteo theme

* New: support for WooCommerce 4.7
* Fix: support for YITH WooCommerce Dynamic Pricing and Discounts
* Update: plugin framework
* Update: language files

* New: support for WooCommerce 4.6
* Update: plugin framework
* Update: language files
* Dev: added yith_wcbm_product_thumbnail_allowed_html filter