This update resolves the issue where an incorrect message was being broadcast.
Now you need the afk.use permission (enabled by default) to use the /afk command.

- %afk_{player}% now requires brackets
- %afk% and %afk_{player}% now return true/false
- Plugin will now properly save afk-players.yml when unloaded (e.g. server restart)

Fixed placeholder coloring bug