Where can I find the release notes for older releases in a convenient place?

I need to understand the release history of Docker, particularly to see features and major bugs fixed in each major release. I’m finding it difficult to find the release notes for older releases in a single place, or at least a short path for each release.

I’d guess https://github.com/docker/docker/blob/master/CHANGELOG.md is what you’re looking for (at least for what is now the Docker Engine core).