- add run() method to AOCDay, so every day can run on it's own -> enable Alt+Shit+F10 and avoid confusion
    -> after wards add a "if __name__ == '__main__': day = Day(); day.run()" to the skeleton
- add download_input() and submit_solution() to AOCDay, this can be automated, so let it ...
- add some sort of "start_day.py", as the manual copy/create is tedious