Date Views pager week granularity & Calendar

Hi. If you use Calendaer module, going to Week view, to Week 52 of 2016 year and pressing [Next >>] on pager you will notice you got Week 1 of 2017, not a Week 53 as should be.

The problem is in /date/date_views/date_views_plugin_pager.inc in function query() near line 288
in this code actually

          $this->view->date_info->prev_date = clone($argument->min_date);
          date_modify($this->view->date_info->prev_date, '-1 ' . $argument->date_handler->granularity);
          $this->view->date_info->next_date = clone($argument->max_date);
          date_modify($this->view->date_info->next_date, '+1 ' . $argument->date_handler->granularity);

... or not here ?

basically this code

$d = new DateTime('2016-12-25');
dpm($d);
$d2 = date_modify($d, '+1 ' .'week');
dpm($d2);

will give $d = '2016-12-25 00:00:00' and $d2 = '2017-01-01 00:00:00'
Which may be correct to build query
WHERE ... >$d AND ... <$d2
but the pager is wrong and week53 is not accesible throught pager

And afterthat line 98 in theme.inc gives 2017 W1

      switch ($granularity) {
        case 'week':
          $next_week = date_week(date_format($next_date, 'Y-m-d'));
          $next_arg = date_format($next_date, 'Y-\W') . date_pad($next_week);
          break;
        default:
          $next_arg = date_format($next_date, $format[$granularity]);
      }

So i did such changes starting at line 89 (below). In this case i dont have week 1 of 2017, but the days are sequence is not interrupted.

      switch ($granularity) {
        case 'week':
$c = clone $next_date;
date_modify($c, '-1 ' . 'day');
$c = date_week(date_format($c, 'Y-m-d'));
if($c > $prev_week) {
$c = clone $next_date;
date_modify($c, '-1 ' . 'day');
$next_date = $c;
} 

          $next_week = date_week(date_format($next_date, 'Y-m-d'));
          $next_arg = date_format($next_date, 'Y-\W') . date_pad($next_week);
          break;