public function __construct() {

		add_filter( 'manage_users_columns', array( $this, 'add_cols' ) );
		add_filter( 'manage_users_custom_column', array( $this, 'output_col' ), 10, 3 );

		add_filter( 'users_list_table_query_args', array( $this, 'modify_query_args' ) );
		add_filter( 'views_users', array( $this, 'modify_views' ) );

		add_filter( 'user_row_actions', array( $this, 'add_actions' ), 20, 2 );

	}