Braintree v1.2.1 Release Notes

    • ➕ Added ValidationErrorCollection#shallow_errors to get all of the ValidationErrors at a given level in the error hierarchy
    • ➕ Added the ability to make a credit card the default card for a customer
    • ➕ Added constants for transaction statuses
    • ⚡️ Updated Quick Start in README.rdoc to show a workflow with error checking