Dependency Updates and better CI

Pushed all dependencies to latest possible version. API remains stable.

Freshly signed artifacts

This release is identical to v0.2.4, except for artifacts being signed with a fresh GPG key.

Scala 2.13 compatible

Adds compatibility with Scala 2.13 and fixes multiple release pipeline issues.

Many thanks to @jvican for helping out with patches of sbt-release-early!

Maintenence Release

See changelog.

Maintenence Release

Merge pull request #4 from combinators/maintenance

Maintenance