Chore: 1.8.0

# [1.8.0](https://git.rwth-aachen.de/coscine/api/sts/compare/v1.7.0...v1.8.0) (2019-12-20)

### Update

* Increased Version numbers for the Logging library ([9af2d532](https://git.rwth-aachen.de/coscine/api/sts/commit/9af2d53205e2810fe1a4cab90f2bce6c079019b5))