[
    {
        "type": "bugfix",
        "category": "Buffer",
        "description": "Update base64 encode/decode to use Buffer.fill when available and throw an error if a number is provided."
    },
    {
        "type": "bugfix",
        "category": "XRay",
        "description": "Add X-Amzn-Trace-Id to list of unsigned headers to prevent signature mismatch errors if the header value is modified while the request is in flight."
    },
    {
        "type": "feature",
        "category": "Cognito",
        "description": "Add new regions and endpoints for Amazon Cognito Identity, Amazon Cognito Sync, and Amazon Cognito Identity Provider."
    },
    {
        "type": "feature",
        "category": "CognitoIdentityServiceProvider",
        "description": "User Pools now offers groups as an easy way to manage users and their permissions."
    },
    {
        "type": "feature",
        "category": "SSM",
        "description": "Add support for Patch Baseline and Patch Compliance APIs"
    }
]