* Fix – Ensure referral coupons are validated properly when using WooCommerce block-based checkout pages.
* Fix – Prevent existing customers with one previous order from incorrectly receiving a second referral.

* Dev – Introduce PHP Compatibility Sniffs, running a dev version to include those available for PHP 8.4.
* Dev – Run the PHP Compatibility Sniffs against the entire production code base.
* Dev – Bump WooCommerce “tested up to” version 10.3.
* Dev – Bump WooCommerce minimum supported version to 10.1.
* Dev – Bump WordPress “tested up to” version 6.9.

* Update: WP and WC compatibility tags.
* Fix: Fix issue with the mail sending function.

* Added – Compatibility with WooCommerce v10.4. PR #857
* Added – Compatibility with PHP v8.5. PR #857
* Fixed – REST API subscription updates failing with error `woocommerce_rest_shop_order_placehold_invalid_id` for older subscriptions when HPOS is enabled without sync. The bug affected subscriptions from the HPOS sync era, but not new subscriptions created after sync was disabled. PR #855

* add – adds fallback for `add_payment_info` and `add_shipping_info` in case of non-standard checkout layouts
* add – adds `user_data` property to `purchase` event
* add – unifies `user_data` event format
* tweak – tested against the latest version of WooCommerce