Release 2.3.0

Merge pull request #42 from Ssstlis/remove_211_support

Remove scala 2.11 support

Release 2.3.0-alpha3

Add build job to update scaladocs

Release 2.3.0-alpha2

Fix version for packages uploaded to github

Release 2.3.0-alpha1

Fixes for github CI

- Set the sonatype credential environment
- checkout in the release job, because hub requires running in the git
repo
- Improve the cache usage

2.2.1: Run sonatype deploy on all branches

Including tags...

2.2.0

Add github release token

v2.2.0

Fix missing ref

v2.1.0: Bump sbt version

And scala versions again

v2.0.1

Update scaladoc links

2.0.1

Update scaladoc links