4.2.0-rc1 plus:

• Fix - Hide Mini-Cart block buttons for carts that need no payment #4788
• Fix - Empty the cart after an express Pay Now payment #4786
• Fix - Complete express PayPal payments after a re-approval #4785
• Fix - Normalize WordPress locales for the v6 SDK #4784
• Fix - Report a failed cart subscription approval to the shopper #4771
• Fix - load the settings app only on the screen that hosts it #4770