Don't auto-upgrade if functionality is dropped

[dumbledore]

Hi guys,

I just realized that I can't filter playlists in the new version. I come to this forum in search of a fix, and realize it's not a bug. The feature is simply left out in this version. 

If you're gonna drop core functionality between versions, I need to make an informed desicion if to upgrade or not. This time I didn't even get the choice not to upgrade since the upgrade was done simply by restarting spotify. 

Thanks

/Gunnar