deprecated argument errors="ignore" causing voluminous warning

[rburghol]

Code:

• Inside function import_uci(str(hsp2_eq_uci), str(temp_eq_h5file))
• Warning:

...\src\hsp2\hsp2tools\readUCI.py:171: FutureWarning: errors='ignore' is deprecated and will raise in a future version. Use to_numeric without passing `errors` and catch exceptions explicitly instead
  df = df.apply(pd.to_numeric, errors="ignore")  # todo: 'ignore' is deprecated.

It would surely make running code a bit cleaner. I don't really know the impact of not ignoring errors (other than the obvious) and don't wanna break the code altogether.