* New: support for WooCommerce 4.2
* Update: plugin framework
* Dev: added yith_wcmc_subscribe_on_completed filter
* Dev: added yith_wcmc_register_mailchimp_groups_registration_form filter
* Dev: added yith_wcmc_handle_checkout_manager_custom_fields filter
* New: support for WooCommerce 4.1
* Update: plugin framework
* Update: Italian language
* Tweak: improved WPML support for field placeholder translations
* Fix: prevent notice on advanced integration items
* Fix: prevent notice when printing "User preferences" metabox