when working with breeze I saw these warnings many times in the logs:

 ```
 =============================== warnings summary ===============================
  tests/providers/amazon/aws/log/test_cloudwatch_task_handler.py::TestCloudwatchTaskHandler::test_close_prevents_duplicate_calls
    /usr/local/lib/python3.6/site-packages/jose/backends/cryptography_backend.py:18: CryptographyDeprecationWarning: int_from_bytes is deprecated, use int.from_bytes instead
      from cryptography.utils import int_from_bytes, int_to_bytes
      
 tests/always/test_example_dags.py::TestExampleDags::test_should_be_importable
    /usr/local/lib/python3.6/importlib/_bootstrap.py:219: RuntimeWarning: numpy.ufunc size changed, may indicate binary incompatibility. Expected 192 from C header, got 216 from PyObject
      return f(*args, **kwds)
  
  tests/always/test_example_dags.py::TestExampleDags::test_should_be_importable
    /usr/local/lib/python3.6/site-packages/scrapbook/__init__.py:8: FutureWarning: 'nteract-scrapbook' package has been renamed to `scrapbook`. No new releases are going out for this old package name.
      warnings.warn("'nteract-scrapbook' package has been renamed to `scrapbook`. No new releases are going out for this old package name.", FutureWarning)
```
     
setup.py
'google-cloud-workflows>=0.1.0,<2.0.0',
    'grpcio-gcp>=0.2.2',
    'json-merge-patch~=0.2',
    
    
    'pandas-gbq<0.15.0',
    'plyvel',
]
grpc = [
    'google-auth>=1.0.0, <2.0.0dev',
    'google-auth-httplib2>=0.0.1',
    'grpcio>=1.15.0',
]
hashicorp = [
    'hvac~=0.10',
]
hdfs = [
    'snakebite-py3',
]
hive = [
    'hmsclient>=0.1.0',
    'pyhive[hive]>=0.6.0',
    'thrift>=0.9.2',
]
jdbc = [
    'jaydebeapi>=1.1.1',
]
jenkins = [
    'python-jenkins>=1.0.0',
]