Merging magnetometer post-processing and calibration script.

Add compass republisher node.

Parameterize output file, make input a little more flexible on topic naming.

Warn user when missing scipy.

Raw mag compass node now republishes IMU message.

Incorporate original roll pitch yaw values.

Sign fix and add frame_id to raw compass output.

Add smoothing factor to um6 raw compass.

Parameterize smoothing value, flip orientation of compass.

Make plots off by default, add parameter for them.

Change default to not reset magnetometer, up the throttle rate to 5000 just in case.

Change number of samples to smooth to 10.

Disable removing of no-movement data.