NeuralEnsemble/ephy_testing_data: Collection of testing data in various electrophysiology file formats.

Julia Sprenger e5dbc29dfd gin commit from hambach37		3 lat temu
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create_data_matlab_blackrock.m	e5dbc29dfd gin commit from hambach37	3 lat temu
openNEV.m	e5dbc29dfd gin commit from hambach37	3 lat temu
openNSx.m	e5dbc29dfd gin commit from hambach37	3 lat temu