PlayTimeManager

A new automatic config update system has been implemented: thanks to the config-version field in config.yml file, the plugin will automatically update your config (maintaining all of your settings) when a new config version is released.

The "playtimegroup add" subcommand has been renamed to "set" to better reflect its functionality. It now adds a new group or overwrites an existing one.

Groups data has been moved from config.yml to DB. The automatic config update will take care of the migration if necessary.

playtimegroup list subcommand has been added

Fixed a critical startup issue