downgrade to kirby v3

vendor/composer/autoload_namespaces.php

@@ -0,0 +1,12 @@
+<?php
+
+// autoload_namespaces.php @generated by Composer
+
+$vendorDir = dirname(__DIR__);
+$baseDir = dirname($vendorDir);
+
+return array(
+    'claviska' => array($vendorDir . '/claviska/simpleimage/src'),
+    'Michelf' => array($vendorDir . '/michelf/php-smartypants'),
+    'ML\\IRI' => array($vendorDir . '/ml/iri'),
+);