Update the Repository

[adtzlr]

Tasks

• [x] rename the default branch from master ➡️ main
• [x] switch to a src/-layout 📁
• [x] use a modern build script 📝
• [x] move the docs to readthedocs 📖
• [x] use a wheel tag 🏷️
• [x] change version number to 1.0.0 🔢
• [x] start keeping a changelog ✍🏻
• [x] format black 🏴
• [x] sort the imports 🟦 🟢 🟥 💛

closes #26 closes #27 closes #30

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@e9c4efe). Click here to learn what that means. Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #29 +/- ## ======================================= Coverage ? 86.43% ======================================= Files ? 28 Lines ? 1364 Branches ? 0 ======================================= Hits ? 1179 Misses ? 185 Partials ? 0 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Andreas+Dutzler). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Andreas+Dutzler)

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.