public function __construct()
{
$default_config = new CalendarConfig();
$default_config->setFormatter(new \SSC\formatters\ArrayFormatter());
$start_date = new \DateTime();
$start_date->sub(new \DateInterval('P' . ($start_date->format('j') - 1) . 'D'));
$default_config->setStartDate($start_date);
$default_config->setInterval(new \DateInterval('P6M'));
$this->config = $default_config;
}
