How to make a release of ammonia
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* Make a pull request with all these changes, wait until it's approved:
* Bump the version in Cargo.toml
* Check if all the dependencies are up-to-date
* Put all the Unreleased stuff in CHANGELOG.md under the new version
* Check out and pull down `master`
* Copy the CHANGELOG into a GitHub release
* Make sure that README.md requests the same major.minor version, and that SECURITY.md describes the backport plan
* Run `cargo publish`