[@Duhemm]: http://github.com/Duhemm
  [1933]: https://github.com/sbt/sbt/issues/1933
  [2258]: https://github.com/sbt/sbt/pull/2258

### Fixes with compatibility implications

### Improvements

### Bug fixes

- Fixes [#1933][1933] duplicate warnings for artifacts in distinct configurations [#2258][2258] by
  [@Duhemm][@Duhemm]