Updated all dependencies and prepared for PHP 8

public/index.php

@@ -0,0 +1,25 @@
+<?php
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+namespace CloudObjects\PhpMAE;
+
+date_default_timezone_set('UTC');
+
+require __DIR__.'/../vendor/autoload.php';
+
+$container = Configurator::getContainer(require __DIR__.'/../config.php');
+
+$mode = $container->get('mode');
+if ($mode == 'default') {
+    // Default mode
+    $container->get(Engine::class)->run();
+} elseif (substr($mode, 0, 7) == 'router:' || $mode == 'hybrid') {
+    // Router or hybrid mode
+    $container->get(Router::class)->run();
+} else {
+    // Error
+    echo "Invalid mode!";
+}