WooCommerce Smart Coupons 8.22.0

* New: Tested up to WooCommerce 6.4.1
* New: Filter coupon's list by coupon category under 'Marketing > Coupons'
* Fix: Store Credit is applying discount before tax, like a coupon, even when the setting 'Apply before tax' is disabled
* Fix: Preview in admin not showing coupon amount & expiry date under 'Marketing > Coupons > Send Store Credit' tab
* Fix: Unable to partially refund an order that is paid with store credit
* Update: POT file

* New: Tested up to WooCommerce 6.4.0 & WordPress 5.9.3
* Fix: Use 'fwrite' instead of 'file_put_contents' [WP VIP team]
* Fix: Subscription renewals not issuing full priced store credit if other coupon is applied to subscription during purchase [WooCommerce Subscriptions]
* Update: POT file

* Fix: Email showing incorrect remaining balance if store credit is applied to a virtual-downloadable order
* Fix: PayPal Payments plugin sometimes rejecting applied store credit amount
* Developer: Filter Hook 'wc_sc_check_parent_attributes' for deciding whether to check attributes mentioned under 'Product data > Attributes (tab)' or not
* Update: Store credit not applying discount when applied via REST API during order creation
* Update: Product's attributes mentioned under 'Product data > Attributes (tab)' are not considered by coupon's Product attributes restrictions for validation of the coupon
* Update: POT file