* renamed the class `rgb()` to `rgba()` to communicate, more clearly, that it supports an alpha channel
* renamed the class `hsl()` to `hsla()` to communicate, more clearly, that it supports an alpha channel
* added more info to the `README.md` as well as additional links
* adjusted the structure inside `CHANGELOG.md` for a better overview and readability
18.10.2024 `v1.2.3`
* added project links to the Python-project-file
* `CHANGELOG.md` improvements
* `README.md` improvements