DeprecationWarning when importing iris #3021
Description
I encountered this issue when attempting to get xarray's test suite working with -W error:
In [1]: import warnings
In [2]: warnings.filterwarnings('always')
In [3]: import iris
/Users/shoyer/miniconda3/envs/xarray-py36/lib/python3.6/site-packages/iris/config.py:94: DeprecationWarning: The SafeConfigParser class has been renamed to ConfigParser in Python 3.2. This alias will be removed in future versions. Use ConfigParser directly instead.
config = configparser.SafeConfigParser()
/Users/shoyer/miniconda3/envs/xarray-py36/lib/python3.6/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
return f(*args, **kwds)
[many duplicate lines omitted]
I have Iris 2.0.0 installed from conda-forge on Python 3.6.