v2.0: Improvement to which PayPal transaction ID is displayed for PayPal Commerce Platform transactions.
v2.0: Improved duplicate-processing check for 3D Secure gateways.
v2.0: Include customer attributes in the payload sent to endpoints (shipping, pre-payment).
v2.0: Changing `customer_is_authenticated` and `authentication_is_successful` to `customer_id` in endpoints (shipping, pre-payment).
v2.0: Fix to Square credit card form breaking when multiple re-renders happened too quickly.
v2.0: Admin improvement to all reconnecting PayPal Commerce Platform.
v2.0: PayPal improvement to prevent empty credentials from being saved in the admin.