Release Process

1. Ensure version in gradle.properties is set to the version you want to release.
2. Add an entry in CHANGELOG.md with the changes for the release.
3. Update README.md with the version about to be released. Also update the RxJava version in this file to its latest.
4. Update the RxJava version in rxkotlin/build.gradle.kts to its latest. (We tell people that we won't be tracking RxJava releases, and we don't, but we do it anyway when we are releasing for those who ignore the advice.)
5. Commit: git commit -am "Prepare version X.Y.X"
6. Tag: git tag -a X.Y.Z -m "Version X.Y.Z"
7. Update VERSION_NAME in gradle.properties to the next development version. For example, if you just tagged version 1.0.4 you would set this value to 1.0.5. Do NOT append "-SNAPSHOT" to this value, it will be added automatically.
8. Commit: git commit -am "Prepare next development version."
9. Push: git push --follow-tags
10. Paste the CHANGELOG.md contents for this version into a Release on GitHub along with the Groovy for depending on the new version (https://github.com/ReactiveX/RxKotlin/releases).