= 2.1.21 – Released on 30 Dec 2020 =
* New: support for WooCommerce 4.9
* Update: plugin framework
* Update: language files
* Tweak: prevent issues with timezones in date-picker
* Tweak: prevent issue when synchronizing calendars with external services that requires the User-Agent set in the request header
* Dev: added yith_wcbk_is_last_minute_discount_allowed filter