Stats: Filter listens by date

[aereaux]

This is a really cool project! It would be cool if there was a way to filter listening stats by date, to get the listened recordings in the last week or year.

[RustyNova016]

That's definitely something I want to do at one point, but first for the lookup command.

Stats and lookup uses the same underlying data structures so it's just a matter to loop over it.

Getting a subset of listen is easy enough, but I also want to get the n-1's stats for fancy comparisons. And that part still needs some thinking about how to do it properly and future proof.