* Tweak-Exclude pending orders when checking the maximum number of orders per day/time frame.
* Tweak-Check the maximum number of orders allowed when validating a delivery date in the checkout form.
* Tweak-Tested compatibility with WC 4.9.
* Fix-The setting “Number of orders” was not being saved when entering a zero value.
* Fix-Deactivate a delivery date/time frame in the calendar when its maximum number of orders is reached.
* Fix-Fixed `array_merge()` warning when adding a product to an active subscription with the “All products for WC Subscriptions” extension.

* Feature-Merge the Extra Columns free add on into the core plugin

* Fix-Prevent field description duplicates when the checkout page is refreshed
* Fix-Prevent validation errors on field types with options using non-Latin characters

* FIXED: fixed a problem with refunds introduced in version 14.0.0.

* Fix-Fix: Prevent critical errors by passing correct number of args to `woocommerce_email_header` in email templates.
* Tweak-WC 4.9 compatibility.
* Tweak-WP 5.6 compatibility.