[
  {
    "category": "Serialization", 
    "description": "[``botocore``] Fixes `#1557 <https://github.com/boto/botocore/issues/1557>`__. Fixed a regression in serialization where request bodies would be improperly encoded.", 
    "type": "bugfix"
  }, 
  {
    "category": "``es``", 
    "description": "[``botocore``] Update es client to latest version", 
    "type": "api-change"
  }, 
  {
    "category": "``rekognition``", 
    "description": "[``botocore``] Update rekognition client to latest version", 
    "type": "api-change"
  }
]