Create CHANGELOG.md

[Archmonger]

• fix Add Changelog #60

[Archmonger]

This changelog is ready, but I strongly suggest merging #58 before our formal release.

Some Django beginners had some issues installing IDOM, and that PR adds the detail needed to resolve that.

[Archmonger]

Did some more minor changes after re-reading. I think I'm satisfied with it now. Feel free to review.

[rmorshea]

Should there be an automated way to enforce additions to the changelog? Maybe something like this?

[rmorshea]

That can be added later though in a different PR.

[Archmonger]

I was thinking of that too, however, it might get annoying for minor PRs such as readme spelling fixes to be forced update the changelog.

If we want to do this, we can do something about that via the skipLabels option within that CI workflow. Like PRs tagged with documentation can be skipped, and then optionally we can add a no-changelog tag on top of that.

But all of that might end up being more effort than manually enforcing changelog updates.

[rmorshea]

Since it'll probably just be us contributing for the time being it's probably not that important to do now.