SickRage is good but the fork Medusa adds several new features and is being updated regularly.
https://github.com/pymedusa/medusa.github.io/
It is easy to install manually and you can backup your SickRage settings and then restore them into Medusa. Only snag I have run into is that it started snatching what I already had, but you can fix this by setting your existing files to archived.
Been testing it for a week and all good. Would be good to have this added to the dietpi-software list?
