Priority list for downloads

[RandallRego]

A nice enhancement would be to number the list of downloads and then be able to manually adjust the priority with a controller like this:

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[neox387]

Unfortunately, apscheduler does not have a priority function, maybe using a custom executor ? seems not easy to make this work.