During OHBMH @htwangtw showed me neo, a python package that can read a lot of different physiological file formats (see the list here), like Spike2 as implemented here.
@htwangtw also has some code that we could use to work on a phys2bids interface for spike2 here.

We could use it to expand our file support to other file formats. Granted, we also would need some actual recordings to work with, but we could start looking around for them.

Some of the file formats are for neurophysiology, some others are for general biosignal - and we should concentrate on those!