Merge pull request #55 from justcoded/feature/update-for-php8

small updates for php8

Author: aprokopenko

framework/Objects/Singleton.php

@@ -31,7 +31,8 @@ protected function __construct() {
 	 *
 	 * @return void
 	 */
-	final private function __clone() {
+	final public function __clone() {
+		throw new \RuntimeException(static::class . ' is singleton and cannot be cloned/serialized.');
 	}
 
 	/**
@@ -40,7 +41,8 @@ final private function __clone() {
 	 *
 	 * @return void
 	 */
-	final private function __wakeup() {
+	final public function __wakeup() {
+		throw new \RuntimeException(static::class . ' is singleton and cannot be cloned/serialized.');
 	}
 
 }