WooCommerce Coupon Restrictions Version 2.4.0 Changelog
* Feature: Add coupon restriction validation for WooCommerce block-based checkout.
* Bugfix: Billing state validation was checking wrong session key.
* Bugfix: Shipping location validation skipped state check when country was also set.
* Update: Declare cart_checkout_blocks compatibility.
* Update: Increase coupon_code column to varchar(255) for new installs.
* Update: Use SELECT COUNT(*) for more efficient usage limit queries.
* Update: Fix typo in method names (seperated -> separated).
* Update: Remove dead code and redundant operations.
