[
  {
    "category": "DynamoDB", 
    "description": "Add request auto de-duplication based on specified primary keys for batch_writer. (`#605 <https://github.com/boto/boto3/issues/605>`__)", 
    "type": "feature"
  }, 
  {
    "category": "s3", 
    "description": "Add managed file-like object uploads to S3 client, Bucket, and Object.", 
    "type": "feature"
  }, 
  {
    "category": "Session", 
    "description": "Fixed Session.__repr__ region argument name.", 
    "type": "bugfix"
  }, 
  {
    "category": "s3", 
    "description": "Add managed copies to S3 client, Bucket, and Object.", 
    "type": "feature"
  }, 
  {
    "category": "s3", 
    "description": "Add managed downloads to file-like objects in the S3 client, Bucket, and Object.", 
    "type": "feature"
  }, 
  {
    "category": "s3", 
    "description": "Port ``s3.transfer`` module to use ``s3transfer`` package. Please refer to `Upgrading Notes <https://boto3.amazonaws.com/v1/documentation/api/latest/guide/upgrading.html>`_ when upgrading. In porting the logic over, various performance issues and bugs were fixed.", 
    "type": "bugfix"
  }, 
  {
    "category": "s3", 
    "description": "Add ``io_chunksize`` parameter to ``TransferConfig``", 
    "type": "feature"
  }
]