### Bug fixes

- Fixes `addSbtPlugin` to use the correct version of sbt. [#3393][]/[#3397][] by [@dwijnand][]

  [#3393]: https://github.com/sbt/sbt/issues/3393
  [#3397]: https://github.com/sbt/sbt/pull/3397
  [@dwijnand]: http://github.com/dwijnand