added microtime to DBG log

SE/se-lib/DBG.php

@@ -281,7 +281,7 @@ class DBG {
 	}
 	public static function _log($mixedArg, $type, $msg, $logFileName) {
 		$logInfo = [
-			'date' => date("Y-m-d H:i:s"),
+			'date' => date("Y-m-d H:i:s") . substr((string)microtime(), 1, 6),
 			'type' => $type,
 			'msg' => $msg,
 			'log' => '',