Update CHANGELOG.md

[APMichael]

Suggestion: Make the changelog more readable by using nested lists.

Edit: I meant nested lists, of course, not nested tables.

[isaak654]

Personally I think this is brilliant, it remains only to convince @DavidXanatos.
If I merge this without his consent, we would definitely end up with future discrepancies.

[APMichael]

Thank you very much for your quick and positive reply. Ok, let's wait and see what David thinks.

[bastik-1001]

In my opinion, this update is an improvement. With the entries being nested, it is clear to which parent entry they belong, and they are easier to spot. This improves the readability, indeed.

[APMichael]

@DavidXanatos is merging the pull request ok for you?

Unfortunately, GitHub's Markdown interpreter does not support the variant you are using:

- Item 1
-- Item 2
--- Item 3

But only this one:

- Item 1
  - Item 2
    - Item 3

[APMichael]

Wow, that was fast. 🚀 Thanks a lot! 👍