Only unique rolls

[bjohnson-va]

Hi. My team uses this great bot to decide on who is going to do assigned tasks. For example, on my team of 6 we /roll 3d6 to choose three people to do some task.

Unfortunately, we often get roll results like 5 5 1, so we have to re-roll to get a set of three numbers.

It would be great if the bot could support something like /roll 3du6 (3 unique d6 rolls).

Thanks