Releasing

Change the version in kmp4free/gradle.properties to a non-SNAPSHOT version.
Update the README.md to reflect the new version number.
git commit -am "Release X.Y.Z." (where X.Y.Z is the new version)
git tag -a X.Y.Z -m "Version X.Y.Z" (where X.Y.Z is the new version)
git push && git push --tags to trigger CI to deploy the release.
Update the gradle.properties to the next SNAPSHOT version.
git commit -am "Prepare next development version."
git push