binary format included a header specifying window choice, device setting

[NiKo-jr]

fix #6

[xloem]

Niko-Jr, thank you so much for working on this!

I found a typo in your code that indicates to me you may not have tested it ... are you able to test the code?

It would be great if you could update the reading code as well as the writing code !

I added a comment to #6 indicating what my dream would really be for this feature. But anything that works is incredibly helpful. Thank you so much for your time and work.