Merge pull request cyoung#167 from cyoung/ahrs

Integrate linux-mpu9150 for AHRS.

Save some cycles when message queues aren't that large.

Merge branch 'master' of https://www.github.com/cyoung/stratux

Merge branch 'master' of https://www.github.com/cyoung/stratux

Detect 'stratux:978' in serial string to keep static 978 tuner dev.

Redo weather/traffic websocket updates (cyoung#74).

Replay log on/off while running.

Improved logging.

GPS improvements.

Type error.