API: Fix to allow certain types of subscription modifications on PayPal RT and Amazon Pay subscriptions.
v2.0: Adding additional logging to Realex 3D Secure v2 handling.
All Versions: Security fix to password resets in the admin, to prevent referrer leakage.
v2.0: Improvement to prevent overly long Square error messages from displaying to customers.
v2.0: Bugfix to allow address updates in certain situations (for stores with this functionality enabled).