imu_compass: 0.0.4-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `imu_compass` to `0.0.4-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `0.0.3-0`

## imu_compass

```
* successful test with kingfisher June 30 2014
* adding the publishing of calibrated magnetometer data for debug purposes
* Contributors: Mike Purvis, Prasenjit Mukherjee
```