Windows Timezone Issue

[guswelter]

(email thread provided separately)

On Windows, a user is running into this exception while creating a sample file using csv2audata:

(testing) C:\Users\ii699\Documents\Kirubel\UMBC\IndependentStudy\Scratch>python -m audata.bin.csv2audata myData.csv
Creating myData.h5
  adding myData
    Parsing time offset column: time
C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\dateutil\parser\_parser.py:1213: UnknownTimezoneWarning: tzname EST identified but not understood.  Pass `tzinfos` argument in order to correctly return a timezone-aware datetime.  In a future version, this will raise an exception.
  warnings.warn("tzname {tzname} identified but not understood.  "
    Found int64 column: value
Traceback (most recent call last):
  File "C:\Users\ii699\miniconda3\envs\testing\lib\runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Users\ii699\miniconda3\envs\testing\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\bin\csv2audata.py", line 119, in <module>
    main()
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\bin\csv2audata.py", line 114, in main
    _walk(au_file, args.path)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\bin\csv2audata.py", line 77, in _walk
    _addcsv(au_file, name, path)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\bin\csv2audata.py", line 60, in _addcsv
    au_file[name] = data
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\group.py", line 118, in __setitem__
    Dataset.new(self, key, value, overwrite=overwrite, **kwargs)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\dataset.py", line 65, in new
    return cls.__new_from_dataframe(au_parent, name, value)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\dataset.py", line 121, in __new_from_dataframe
    meta, recs = utils.audata_from_df(
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\audata\_utils.py", line 72, in audata_from_df
    data[col] = (data[col].dt.tz_convert(time_ref.tzinfo) -
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\pandas\core\accessor.py", line 92, in f
    return self._delegate_method(name, *args, **kwargs)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\pandas\core\indexes\accessors.py", line 109, in _delegate_method
    result = method(*args, **kwargs)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\pandas\core\indexes\datetimes.py", line 243, in tz_convert
    arr = self._data.tz_convert(tz)
  File "C:\Users\ii699\miniconda3\envs\testing\lib\site-packages\pandas\core\arrays\datetimes.py", line 814, in tz_convert
    raise TypeError(
TypeError: Cannot convert tz-naive timestamps, use tz_localize to localize