* Fix - Bug that would hide Go Cardless when WooCommerce Pre-Orders was active * Tweak - WP tested up to 5.8. * Tweak - WC tested up to 6.0
* Fix - Customers are charged when changing payment method on a subscription. * Tweak - WP tested up to 5.3. * Tweak - WC tested up to 3.8
* Fix - floating point imprecision when calculating total.
