scitos_2d_navigation: 0.0.4-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `scitos_2d_navigation` to `0.0.4-0`:

- upstream repository: https://github.com/strands-project/scitos_2d_navigation.git
- release repository: https://github.com/strands-project-releases/scitos_2d_navigation.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.12`
- previous version for package: `null`

## scitos_2d_navigation

```
* Merge branch 'release_cleanup2' of https://github.com/nilsbore/scitos_2d_navigation into nilsbore-release_cleanup2
  Conflicts:
  launch/move_base_3d.launch
  scitos_move_base_params_3d/costmap_common_params.yaml
  scitos_move_base_params_3d/local_costmap_params.yaml
  src/remove_edges_cloud.cpp
* Merge branch 'hydro-devel' of https://github.com/strands-project/scitos_2d_navigation into hydro-devel
* Merge pull request #40 <https://github.com/strands-project/scitos_2d_navigation/issues/40> from nilsbore/newtry
  This adds an extra obstacle layer in the local costmap that can be used for backtracking
* Changed to only depend on move_base in package.xml as well
* Removed unnecessary dependencies, now only relying on move_base.
* Merge remote-tracking branch 'upstream/hydro-devel' into release_cleanup2
* Removed the build configuration from the Cmake file
* Removed the stuff that is now in strands_movebase
* Forgot to remove the cliff sensor, which is not there anymore
* Changed some thresholds mostly
* Removed cliff detection from the head sensor since this can cause problems
* Forgot to remove the sensor inputs from the normal obstacle layer
* Only having head observations in one layer now
* Changed the maximum height of obstacles added from head so that they can be cleared from chest sensor
* Merged the latest changes
* Merge remote-tracking branch 'upstream/hydro-devel' into hydro-devel
* Added the head sensor the be activated when needed
* Added the sensors to the planning
* Changed heights of head sensor
* Added the head sensor that will be publishing only when the robot gets stuck
* Contributors: Marc Hanheide, Nils Bore, Rares Ambrus, strands
```