* Add: Declare compatibility with WooCommerce High-Performance Order Storage (HPOS). #418
* Fix: Purchasing a gift subscription via the checkout on stores that have HPOS enabled. #426
* Fix: Display the Subscriptions list table filter to filter by gifted and non-gifted subscriptions when HPOS is enabled. #428
* Fix: Filter the Subscription list table when the gifting filter is used on stores with HPOS enabled. #428
* Fix: Show the correct number of gifted subscriptions in the system status report when HPOS is enabled. #430
* Fix: Empty edit subscriptions link on the Subscriptions list table when HPOS is enabled. #431
* Fix: Grant view_order permissions to recipients when HPOS is enabled. #431
* Fix: Save and update the recipients address on the subscription when HPOS is enabled. #433
* Dev: Update `get_recipient_subscriptions()` to replace `get_posts()` with `wcs_get_subscriptions()`. #426
* Dev: Update `set_recipient_user()` and `delete_recipient_user` to use WC CRUD methods. #426
* Dev: Fixes deprecation warnings on the latest Subscriptions version. #431
* Dev: Update `$post->post_type` code to use subscriptions data store functions. #431
