Allow checking off YSWS

[SkyfallWasTaken]

Would be nice if we could tick off YSWS that we’ve already completed. I think you could add a round property to limited time YSWSes, then store it in localStorage. Then, the site will register it as completed if the round property in the YML file == round stored in local storage.

[PawiX25]

Hey! I've added the completion tracking to allow users to mark YSWS as completed, you can check it out here

[Bluelightning26]

I love this feature!