Modernize

[hannesa2]

For details, please see commit messages

[ghost]

👇 Click on the image for a new way to code review

- Make big changes easier — review code in small groups of related files - Know where to start — see the whole change at a glance - Take a code tour — explore the change with an interactive tour - Make comments and review — all fully sync’ed with github [Try it now!](https://app.codesee.io/r/reviews?pr=20&src=https%3A%2F%2Fgithub.com%2Fcomodoro%2FFractalZoo)

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