Add processShortcodesRaw() using raw_handlers (#104)

classes/plugin/ShortcodeManager.php

@@ -283,16 +283,27 @@ public function processRawContent(PageInterface $page, Data $config)
      * For example when used by Twig directly
      *
      * @param $str
+     * @param null $handlers
      * @return string
      */
-    public function processShortcodes($str)
+    public function processShortcodes($str, $handlers = null)
     {
         $parser = $this->getParser($this->config->get('parser'));
-        $processor = new Processor(new $parser(new CommonSyntax()), $this->handlers);
+
+        if (!$handlers) {
+            $handlers = $this->handlers;
+        }
+
+        $processor = new Processor(new $parser(new CommonSyntax()), $handlers);
 
         return $processor->process($str);
     }
 
+    public function processShortcodesRaw($str)
+    {
+        return $this->processShortcodes($str, $this->raw_handlers);
+    }
+
     /**
      * set a state of a particular item with a hash for retrieval later
      *