Add new otherMessagesMap and otherItemMessagesMap map fields to the MarketingMessageResponse.
Introduce invalidatePricing flag:
Add invalidatePricing field to the PriceableCartClientCallOptions type, and to the AddAttributeRequest interface.
Add attachInvalidatePricingParamIfPresent method to the CartClient.
Add new X_Customer_Ref header to cart requests:
This header is useful for CSRs acting as themselves rather than impersonating a customer to retain the cart’s customer ref pricing when modifying a cart.
Add customerRef to CheckoutClientCallOptions and CartClientCallOptions.
Add attachCustomerRefHeaderIfPresent to the CartClient and the CheckoutClient.