With facelift-2 comes a new way Tokens handles its
messages.yml file. Tokens will now generate the things it needs in this file. Example: If there is an update that adds another message, Tokens will automatically add the new line to the file so you don't have to manually compare the last version's file to the new version each update.
Of course this doesn't apply to
keys.yml because that file is entirely up to the user to fill out.