Hi, thank you for developing this really useful rate limiter!! I'm now about to use this library😃

And I thought what about supporting redis_rate.PerDay().
As you know, currently, we have only choices of PerSec(), PerMin() and PerHour(). However, some ppl (not only me, maybe) might wanna set limits per day.

If it doesn't sound like a bad idea, if I may, I would like to work on it😊
Would be really happy if you gave me a reply...!