YITH WooCommerce Checkout Manager Premium 1.16.0
* New: support for WooCommerce 6.6
* Update: YITH plugin framework
* Fix: minor bugs
* New: support for WordPress 5.8
* New: support for WooCommerce 5.5
* Update: YITH plugin framework
* Fix: product in cart validate condition
* Fix: enable/disable field using bulk action