Hi

It'd be really nice if there was a way to add release 'summaries' when using this tool. Random example.

At first I thought the tool could either examine tags for annotations or maybe query the github 'release' data, but this won't work (people need to generate the changelog and include it in a release before they've tagged the project).

Maybe we could use a .github-changelog-generator.yaml (naming things is hard!) at the root of the repo? I dunno... something along the lines of... (ill thought out example follows)

---
releases:
  'v1.0.1':
    summary: 'This is a small bug fix release only affected Arch Linux users.'
  'v1.0.0':
    summary: 'This release adds support for internationalization.'

Any suggestions?