v2.0: Re-adding 3D Secure v2 support for Square.
v2.0: Improvements to PayPal Commerce Platform onboarding to prevent errors on missing emails.
v2.0: Update VendorTxCode sent for Opayo transactions on checkout load.
API: The `json` param on `fraud_protection` resources wasn’t settable. (And yes, `json` is a bad parameter name. We’ll improve that in our next API version, as it could be a breaking change for some.)
API: `item_options` are not modifiable if the store has the transaction modification functionality enabled.