Allow people to rate mnemonics 👍👎

[NickH]

Mnemonic ratings are definitely a good idea.
As for sharing custom mnemonics, there’s a script that someone made to share them, with a +1/-1 rating system (I think this is the one I had installed), but it didn’t have many. And I assume there are even fewer at higher levels. That script hasn’t been updated since 2015. Maybe there’s a newer one somewhere.