mpy-IMU / fusion with FXAS/FXOS chips

[pythoncoder]

@OutoftheBOTS_ That module looks like an awesome piece of work. The docs are great and he's evidently studied sensor fusion in considerable depth. It offers much better performance than a software Madgwick solution.

[OutoftheBOTS_]

Yes although it is probably the most expensive option that I have looked at it by far seems the be the best. It is obvious he has invested many hours to be able to develop it. I Do generally enjoy building my own rather than just using something else some else built but I think with the complexity and hours required for me to make my own work I will short cut it and put my hand in my pocket and buy the prebuilt option.