add optional fields to the toml regarding gnd + ref #16
Description
in BIDS metadata of ....eeg.json there are fields to fill in GND and REF location. We could ask for those optionally in the toml, to directly have that documented.
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in BIDS metadata of ....eeg.json there are fields to fill in GND and REF location. We could ask for those optionally in the toml, to directly have that documented.