4.6.1 to 4.6.2 upgrade broke my site

This is the second (or possibly third) time an upgrade has broken my site. Think it’s time for some better QA. I reverted to 4.6.1 and the site worked properly. Was this function removed? The error was:

Fatal error: Call to undefined function tribe_is_past() in c:\path here\theme-functions.php. Here is the relevant function.
‘
function tribe_past_reverse_chronological ($post_object) {
$past_ajax = (defined( ‘DOING_AJAX’ ) && DOING_AJAX && $_REQUEST[‘tribe_event_display’] === ‘past’) ? true : false;
if(tribe_is_past() || $past_ajax) {
$post_object = array_reverse($post_object);
}
return $post_object;
}
add_filter(‘the_posts’, ‘tribe_past_reverse_chronological’, 100);
‘