Updated load_preproc_lfp_data so that it would deal with multiple recordings.
Made load_preproc_ap_data, load_preproc_spike_data, load_spike_waveforms.
i think we should check which drives are present in the files and throw a warning if you're trying to load data with drive=None but there are two drives
Updated load_preproc_lfp_data so that it would deal with multiple recordings. Made load_preproc_ap_data, load_preproc_spike_data, load_spike_waveforms.