WooCommerce Smart Coupons 8.20.1

* New: Error logging under WooCommerce > Status > Logs for logs generated by Smart Coupons plugin
* Fix: Coupon tab on My Account page is not showing any message if no coupon is available
* Fix: Store Credit is discounting only 1 quantity of an item when remaining order amount is paid via PayPal Standard [Thanks to: Oliver Zieschang]
* Fix: Coupons Linked to Products are Missing from Emails when Using PayPal (when there's delay in IPN notification from PayPal)
* Fix: Store Credit deducting everytime when order status is updated from order action column from WooCommerce > Orders
* Fix: Incorrect expiry date set in coupons during import when locale is defined
* Fix: Sometimes incorrectly showing error message on order-received page when store credit is getting used up completely in that order
* Fix: Minor fixes related to 'Call to member function on boolean'
* Update: POT File

* New: WooCommerce 3.4.2 compatibility
* Fix: PHP Notice: Undefined variable: smart_coupons_block
* Fix: Error: Call to member function 'get_id' on boolean when updating order
* Fix: Store Credit deducting everytime when order status is updated from order admin page
* Update: Enabled Free Shipping, Usage Limit (Per Coupon, Per User) field for Store Credit
* Update: Apply remaining balance of store credit to renewal order even if it is less than renewal order total [WooCommerce Subscription]
* Update: POT File

* Update: Remove Order Personal data on WooCommerce hook
* Update: Query to handle lengthy data
* Update: Remove debug code
* Update: Text domain
* Update: POT file