Add the wiring diagram to the repo.
Fix gyro_offset type to prevent overflow.
Avoid millis() in spiral demo, reorder code.
Adjust filter parameters a bit, fix REVERSE.

It looks like the gyro_mult functionality is causing problems, for now
use a lower weight and give a bigger weight to simple angle correction.
Gives a pretty good result after some time of riding, i.e. probably when
the centrifugal force estimation has enough data.
1st attempt at an adafruit-like pacman demo.

Probably needs some fixing to look good, like not closing the "mouth"
completely.
Add script to generate tables for globe animation.

The .ino file is the result of running the .py script.  Including the
.ino file in the sketch adds a good 5-6kB to the flash image.
A simple rotating-globe effect.