* Fix - Fatal error from third-party extensions using the `woocommerce_update_order` expecting the second parameter.
* Dev - Pass the subscription object as the second parameter to `woocommerce_update_subscription` hook (and `woocommerce_update_order` for backwards compatibility).
* Dev - Return a response from the WC_Subscription::set_status() function in line with the parent WC_Order::set_status() function.
* Dev - Add the 'wcs_recurring_shipping_package_rates_match_standard_rates' filter to enable third-parties to override whether the subscription packages match during checkout validation.
