Download breakdown by compatible versions
Imagine a crate with some history.
We want to answer the question, is someone still using 0.4.x and should it get bugfixes?
It would be very useful if the download statistics could show statistics grouped by cargo's default compatible version cohorts, meaning that all 0.4.* downloads are one line, 0.5.* are one line, etc.
I don't consider it so useful to have to go through the 20 current versions inside 0.4.* manually.
I'm happy to work on this issue if it's still wanted? I'm guessing something like the attached image (sorry for the poor quality, I'm not a designer!) breaking down the number of downloads for each minor version of a crate. I've assumed over 90 days is the sort of metric you're interested in? Maybe worth adding this for crate owners only?

This still seems useful to me! I can see it has not gotten much attention in terms of +1's but it might be a quite invisible issue.