Diagnostics Future Warning

[rubcalvo]

Hi! I've been using xanthos this past month and the Diagnostics Module print the following future warning:

INFO: ---Start Diagnostics:
/home/rcalvo/miniconda3/envs/xanthos/lib/python3.7/site-packages/xanthos/diagnostics/diagnostics.py:130: FutureWarning: Slicing a positional slice with .loc is not supported, and will raise TypeError in a future version. Use .loc with labels or .iloc with positions instead.
agg_df.loc[-1, 1:] = agg_df.sum(numeric_only=True)

Just a heads up.

Thanks.