Collect package download information

[stelmo]

We should collect download stats. This will be useful when requesting sustainability for the project and motivate its importance. Not sure how to remove CI from the stats, but maybe relative growth would be enough...

[exaexa]

Not sure if we can actually get to that info (we'd need to ask Julia infrastructure people). Where does the download badge get the info?

[stelmo]

from Genie's creator I think? I am also not sure :/ It will probably involve a higher level understanding of git infrastructure, hence me passing the ball :)

[exaexa]

apparently it's from here: https://discourse.julialang.org/t/announcing-package-download-stats/69073

[stelmo]

we should put the badge on the repo

[exaexa]

Turns out this is basically impossible to do reliably unless we host everything on our own infrastructure, at which point we still can't really collect much info because of gdpr issues. I'm closing this as impractical, feel free to reopen later if some concrete solution surfaces.