Comma separate checkbox fields

I’ve added a bit of code in the shortcode function (at line 495) to make a checkbox show as comma separated —

//if the field is a checkbox field
elseif(is_array($field_value) && $field["type"] == "checkbox" ) {

	//sort the array by key
	ksort($field_value);
	$field_values = "";

	// Concatenate field values into string separated by a comma
	foreach ($field_value as $field => $value) {
	   if($value !== "") { $field_values .= $value . ", "; }
	}
	$field_values = trim($field_values, ', '); // strip the last ', ' space from the end of the string
	$list_html .= "<td class='sort-$i $nowrap $tdClass'>$field_values</td>";
}

May be worth an adding in (or as an option) in a future release?