YITH WooCommerce Membership Premium 2.20.0

* New: support for WooCommerce 6.9
* Update: YITH plugin framework
* Update: language files
* Tweak: improved the way to handle hiding add-to-cart and price for members in combination with different themes
* Tweak: new CSS class to identify single download link shown by shortcode
* Dev: new filter 'yith_wcmbs_skip_render_protected_content_shortcode'

* New: support for WooCommerce 6.8
* Update: YITH plugin framework
* Update: language files

YITH WooCommerce Membership Premium 1.15.0

* New: support for WooCommerce 6.7
* Update: YITH plugin framework
* Update: language files
* Dev: added 'yith_wcmbs_membership_download_labels' filter