Releasing

1. Change the version in gradle.properties to a non-SNAPSHOT version.
2. Update docs/changelog.md for the impending release.
3. git commit -am "Prepare for release X.Y.Z." (where X.Y.Z is the new version)
4. git tag -a X.Y.Z -m "Version X.Y.Z" (where X.Y.Z is the new version).
5. Update gradle.properties to the next SNAPSHOT version.
6. git commit -am "Prepare next development version.".
7. git push && git push --tags.

This will trigger a GitHub Action workflow which will create a GitHub release and upload the release artifacts to Maven Central.