Time column with interval

Hi!

I want to suggest one option to implement. It’s better for me view interval in time-column. Like this “11:00 – 11:30”.

For this iI have changed function “mptt_make_data_shortcode”

   /**
 * Make data shortcode
 *
 * @param $bounds
 * @param $mptt_shortcode_data
 * @param $column_events
 *
 * @return array
 */
function mptt_make_data_shortcode( $bounds, $mptt_shortcode_data, $column_events ) {
	$data        = array( 'rows' => array() );
	$amount_rows = 23 / $mptt_shortcode_data[ 'params' ][ 'increment' ];
	
	$data[ 'table_header' ] = mptt_get_header_row( $mptt_shortcode_data );
	
	foreach ( $column_events as $column_id => $events_list ) {
		
		foreach ( $events_list as $event_key => $item ) {
			if ( isset( $item->resolve ) ) {
				unset( $item->resolve );
			}
		}
	}
	
	for ( $row_index = $bounds[ 'start' ]; $row_index <= $bounds[ 'end' ]; $row_index ++ ) {
		
		$table_time_cell = get_time_cell( $row_index, $amount_rows, $mptt_shortcode_data[ 'params' ][ 'increment' ] );
		<span style="text-decoration: underline;">$table_time_cell_end = get_time_cell( $row_index+1, $amount_rows, $mptt_shortcode_data[ 'params' ][ 'increment' ] );</span>
		
		list( $row_cells, $column_events ) = mptt_get_row_events( $column_events, $row_index );
		
		if ( $mptt_shortcode_data[ 'params' ][ 'group' ] ) {
			$row_cells = mptt_group_identical_row_events( $row_cells );
		}
		
		$data[ 'rows' ][ $row_index ][ 'cells' ] = $row_cells;
		$data[ 'rows' ][ $row_index ][ 'show' ]  = mptt_shortcode_row_has_items( $row_index, $column_events );
		
		if ( ! $mptt_shortcode_data[ 'params' ][ 'hide_hrs' ] ) {
			array_unshift( $data[ 'rows' ][ $row_index ][ 'cells' ], array( 'time_cell' => true, 'title' => date( get_option( 'time_format' ), strtotime( $table_time_cell ) )<span style="text-decoration: underline;"> . ' - ' . date( get_option( 'time_format' ), strtotime( $table_time_cell_end ) ) ) )</span>;
		}
	}
	
	return $data;
}

Sorry for my English ??