code: func (t *Table) SetSeparator(separator rune) *Table {
  	t.separator = separator
  	return t
  }
docs: // SetSeparator sets the character used to fill the space between two
  // neighboring cells. This is a space character ' ' per default but you may
  // want to set it to Borders.Vertical (or any other rune) if the column
  // separation should be more visible. If cell borders are activated, this is
  // ignored.
  //
  // Separators have the same color as borders.