Keep a changelog

I liked the way that's pytest structure the changelog

https://github.com/pytest-dev/pytest/tree/main/changelog

It uses `towncrier` over the hood
https://pypi.org/project/towncrier/

And also have a good pull-request template: https://raw.githubusercontent.com/pytest-dev/pytest/main/.github/PULL_REQUEST_TEMPLATE.md
