Checklist for publishing

1. Update CHANGELOG.md with changes per Keep a Changelog format
2. Update documentation in website/docs
3. Run yarn lerna version [major|minor|patch|prerelease] --no-push (this automatically runs the version script in ./package.json before committing and tagging)
4. Check that all the dependencies have the new version number
5. Run yarn lerna publish from-git (with --dist-tag next if version is prerelease)
6. Run git push && git push --tags