function showCalendar($slug, DateTime $date = null)
{
    CalendarPlugin::showCalendar($slug, $date);
}
/**
 * Alias of CalendarPlugin::showEvent()
 * @deprecated
 */
function showEvent(CalendarEvent $event, $show_author = true)
{
    CalendarPlugin::showEvent($event, $show_author);
}
/**
 * Alias of CalendarPlugin::showEvents()
 * @deprecated
 */
function showEvents(array $events)
{
    CalendarPlugin::showEvent($events);
}
/**
 * Alias of CalendarPlugin::validateDateString()
 * @deprecated
 */
function validateDateString($date_str, $format)
{
    return CalendarPlugin::validateDateString($date_str, $format);
}
/*******************************************************************************/
CalendarPlugin::register();