Fixed - Fixed system blocking duel commands that spammed the chat when executing a command.
Fixed/Added - Fixed blocked commands opening an inventory. Added new settings: blocked-commands.inventory. If set to true, all inventories (inventories of other plugins for example) that the player will try to open (except his own inventory) will be automatically closed. For more details, check here and here.
Do not forget to update your configuration files(settings.yml) otherwise the new plugin features will not work and the plugin will cause errors.