new feature: list good but dormant feeds
Created by: tsrodm
Empirically, I've found a fair number of feeds in my podcasts.conf that are valid, but stale; ie the website is no longer providing any new podcasts.
How about a logging feature that would list URLs for these sites. Maybe a switch:
such that above switch would create a STDERR warning with text something like:
"last update for URLHERE was DATEHERE"
so we could grep the logs, and remove those sites from podcasts.conf.