[Podcasts] Remember unplayed / downloaded podcast filter when closing and reopening the app

[Mrmcwhorter]

Give the option to remember filtering by unplayed on podcasts. So that once the app is closed and reopened later, the podcast doesn’t have to be refiltered by unplayed.  

[gezbo]

This really needs to be implemented. Such a faff when trying to catch up on old podcast episodes!

[Duckrabbit]

This being “up for votes” is ludicrous. This is a *basic* feature of *any* podcast app.

If Spotify doesn’t tackle this, I’m switching back to Stitcher & will stop my premium account.