re-add the .mat file suffix to the json index of sequence-segment id indices that matlab couldn't hash but python can manage fine
re-add the .mat file suffix to the json index of sequence-segment id indices that matlab couldn't hash but python can manage fine

Neuroglycerin/hail-seizure,Neuroglycerin/hail-seizure,Neuroglycerin/hail-seizure,Neuroglycerin/hail-seizure,Neuroglycerin/hail-seizure,Neuroglycerin/hail-seizure