Pandas compatability

We currently can't upgrade to the latest pandas version as there have been changes to parameter names. This are the respective FutureWarnings announcing the change:

  /home/schaefed/SourceCode/Python/saqc/saqc/lib/ts_operators.py:319: FutureWarning: 'base' in .resample() and in Grouper() is deprecated.
  The new arguments that you should use are 'offset' or 'origin'.
  
  >>> df.resample(freq="3s", base=2)
  
  becomes:
  
  >>> df.resample(freq="3s", offset="2s")
  
    data_resampler = data.resample(

-- Docs: https://docs.pytest.org/en/stable/warnings.html