grasping_msgs: 0.3.0-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `grasping_msgs` to `0.3.0-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.9`
- previous version for package: `null`

## grasping_msgs

```
* prepare public release
* Contributors: Michael Ferguson
```