v0.2.1

Lots of stuff has changed since v0.2.0:

• Support for BMI160, MPU-9250, ICM-29048 thanks to @LETS-BEE, @deiteris, @Boronare, @unlogisch04
• Many many many fixes by the same people and @ButterscotchV, @rammlebubble, @Kamilake, @JINODK, @Charlito33, @Vyolex and others
• Fixed support for BNO055 by @deiteris and @Eirenliel
• Added CI for testing that everything works each commit by @TheDevMinerTV
• New logging by @TheDevMinerTV