Requierement:Regenerate menu.yml to apply the new config changes (delete the file and restart your server).
Added more menu customization: Now you can change the size of the menu and also can change the material of the on and off items.
General Changes: MySqlConnection class is now called MySqlManager and is located on the managers packages. Config changes had also been done to the plugin, it will require you to re-generate menu.yml (delete the file menu.yml and restart your server).