Release

Update version in Cargo.toml.
Update CHANGELOG.md with version and publication date.
Update README.md with version.
Run tests: cargo test.
Stage changes: git add Cargo.lock Cargo.toml CHANGELOG.md README.md.
Create git commit: git commit -m "Bump version to $VERSION".
Create git tag: git tag -m "" -a v$VERSION.
Push release: git push --follow-tags.