because it is a user config, so our config shoudn't break even we if dont have it use our own table merge function move loading config to a function use a global variable to store the config, so no need to call the table function everytime
because it is a user config, so our config shoudn't break even we if dont have it use our own table merge function move loading config to a function use a global variable to store the config, so no need to call the table function everytime