* Fix: The WooCommerce Subscription product type API Resources refunded quantity was not incremented, and acitvations purchased were not decremented, when the product line item was refunded on the Order screen after recent WooCommerce Subscriptions update.
* Tweak: Confirm Amazon S3 constants are set in wp-config.php, or WooCommerce > Settings > API Manager > Amazon S3 settings are set, before modifying Amazon S3 product file URL for secure Amazon S3 access.
* Fix: SmartCache was not deleting Information or Update API caches as expected when API Key was deactivated.
