Cut-off frequency restrictions
Together with Guillaume we are looking into using pyGWB more broadly then 'intentional' to calculate coh, CSD and PSDs for data quality purposes on magnetic and seismic data. However in this case there are instances where we want to use a cut-off frequency < 1 Hz. In parameters only an int value is allowed. However down in the code in apply_high_pass_filter a float value is accepted. For our purposes it would be good if a float value would be allowed in the params file (given that it doesn't break anything else of course).