ml_classifiers: 0.3.1-2 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `ml_classifiers` to `0.3.1-2`:

- upstream repository: https://github.com/jolting/ml_classifiers.git
- release repository: https://github.com/jolting/ml_classifiers-release.git
- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.11`
- previous version for package: `null`

## ml_classifiers

```
* Fix build for indigo
* Merge pull request #2 <https://github.com/sniekum/ml_classifiers/issues/2> from davetcoleman/rospack_dep
  Missing dep on rosdep
* Missing dep on rosdep
* updated version number
* Merge pull request #1 <https://github.com/sniekum/ml_classifiers/issues/1> from k-okada/hydro
  upgrade to hydro
* upgrade to hydro
* added rosdep eigen
* removed eigen rosdep
* updated version
* fixed rosdep
* Switched linear kernel to RBF
* Moved to github
* Contributors: Dave Coleman, Hunter Laux, Kei Okada, Scott Niekum, sniekum
```