Prepare 2.9.0 release

Prepare 2.8.1 release.

Release 2.8.0

Prepare 2.7.1 release.

Prepare 2.7.0 release

Release 3.0.0-beta.2

Release 2.6.4

Appearantly 3.0-beta.1 is not a valid version.

Release 2.6.2, fixed dist folder generation.

Dev dependency ended up in normal dependencies