/**
  * Gets migrations that have no been applied yet AND have a later timestamp than the current Craft release.
  *
  * @param $plugin
  *
  * @return array
  */
 public function getNewMigrations($plugin = null)
 {
     $migrations = array();
     $migrationPath = $this->getMigrationPath($plugin);
     if (IOHelper::folderExists($migrationPath) && IOHelper::isReadable($migrationPath)) {
         $applied = array();
         foreach ($this->getMigrationHistory($plugin) as $migration) {
             $applied[] = $migration['version'];
         }
         $handle = opendir($migrationPath);
         if ($plugin) {
             $pluginInfo = craft()->plugins->getPluginInfo($plugin);
             $storedDate = $pluginInfo['installDate']->getTimestamp();
         } else {
             $storedDate = Craft::getReleaseDate()->getTimestamp();
         }
         while (($file = readdir($handle)) !== false) {
             if ($file[0] === '.') {
                 continue;
             }
             $path = IOHelper::normalizePathSeparators($migrationPath . $file);
             $class = IOHelper::getFileName($path, false);
             // Have we already run this migration?
             if (in_array($class, $applied)) {
                 continue;
             }
             if (preg_match('/^m(\\d\\d)(\\d\\d)(\\d\\d)_(\\d\\d)(\\d\\d)(\\d\\d)_\\w+\\.php$/', $file, $matches)) {
                 // Check the migration timestamp against the Craft release date
                 $time = strtotime('20' . $matches[1] . '-' . $matches[2] . '-' . $matches[3] . ' ' . $matches[4] . ':' . $matches[5] . ':' . $matches[6]);
                 if ($time > $storedDate) {
                     $migrations[] = $class;
                 }
             }
         }
         closedir($handle);
         sort($migrations);
     }
     return $migrations;
 }