The tracking Issue.
We should consider that we could automatically generate change log from your tags, issues, labels and pull requests on GitHub.
Samples:
https://pypi.python.org/pypi/gitchangelog#changelog
https://www.npmjs.com/package/auto-changelog
https://github.com/skywinder/github-changelog-generator

Also I found this project very interesting (and links there too) for releasing process.