This release also adds the ability to create one-time-use keys that are removed on use. The config.yml option padlock.one_time_key may be set to a string that will be checked against the key name used on a locked chest. For example if padlock.one_time_key: 'Treasure' is set in the config.yml, and chest that is locked that has 'Treasure' in it's name will have the key removed and chest unlocked when the key is used. This is useful if you want to populate chests with hidden keys on a map.