def add_row array
      row = array == :separator ? Separator.new(self) : Row.new(self, array)
      @rows << row
      require_column_widths_recalc unless row.is_a?(Separator)
    end
def add_row array
      row = array == :separator ? Separator.new(self) : Row.new(self, array)
      @rows << row
      require_column_widths_recalc unless row.is_a?(Separator)
    end
Add a row.