Fork of
BNO055_fusion
by 
Kenji Arai
Please note: pitch and roll in get_euler_angles are switched, the code should be like this:
h = dt[1] << 8 | dt[0]; r = dt[3] << 8 | dt[2]; p = dt[5] << 8 | dt[4];
See https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bno055-ds000.pdf