'Construct' for decoding binary blobs

[mungewell]

Just a suggestion.... which are welcome to ignore. :-)

I've just been through the same process with the Akai MPD218. I found that Construct was/is a really good way of documenting the structure of the SysEx.
https://github.com/mungewell/mpd-utils/blob/master/mpd218.py#L47

Cheers.