Convert series values to str and maybe concatenate them

    Parameters
    ----------
    label_info : series
        Series whose values will be returned
    multi_line : bool
        Whether to place each variable on a separate line

    Returns
    -------
    out : series
        Label text strings

def label_value(label_info, multi_line=True):
    """
    Convert series values to str and maybe concatenate them

    Parameters
    ----------
    label_info : series
        Series whose values will be returned
    multi_line : bool
        Whether to place each variable on a separate line

    Returns
    -------
    out : series
        Label text strings
    """
    label_info = label_info.astype(str)
    if not multi_line:
        label_info = collapse_label_lines(label_info)

    return label_info