Move custom libs to the source tree

libs/SimpleValidator/Validators/NotInArray.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class NotInArray extends InArray
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return ! in_array($data[$this->field], $this->array);
+        }
+
+        return true;
+    }
+}