Wouldn't this defeat the YubiKey's purpose? One of the points in the pull request mentions only supporting a single YubiKey, which I believe is how you'd most c

Wouldn't this defeat the YubiKey's purpose? One of the points in the pull request mentions only supporting a single YubiKey, which I believe is how you'd most commonly solve this issue (having a backup YubiKey). It's also possible to store a backup of your KeePass database with a passcode somewhere safe.