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
sha = repo.head.commit.hexsha
        if repo.is_dirty():
            return f'.dev0+{sha}.dirty'
        
        return f'.release:{version_}+{sha}'
    return 'no_git_version'
def write_version(filename: str = os.path.join(*[my_dir, "airflow", "git_version"])):
    """
    Write the Semver version + git hash to file, e.g. ".dev0+2f635dc265e78db6708f59f68e8009abb92c1e65".
    :param str filename: Destination file to write
    """
    text = f"{git_version(version)}"
    with open(filename, 'w') as file:
        file.write(text)
def get_sphinx_theme_version() -> str:
    """
    Return sphinx theme version. If USE_THEME_FROM_GIT env variable is set, the theme is used from
    GitHub to allow dynamically update it during development. However for regular PIP release
    you cannot use @ package specification, so the latest available released theme package from
    PIP is used.
    :return: Version of sphinx theme to use.
    """
    if os.environ.get('USE_THEME_FROM_GIT'):
        return (
            "@ https://github.com/apache/airflow-site/releases/download/0.0.4/"
            + "sphinx_airflow_theme-0.0.4-py3-none-any.whl"
        )
    return ''
amazon = [
    'boto3>=1.15.0,<1.18.0',