Change private template methods in protected

Create custom template classes is much easier extending default class
and overriding collect() and/or buildContext()

src/Template/Template.php

@@ -251,9 +251,10 @@ public function layoutPath()
      * @return string
      * @access private
      */
-    private function collect($path)
+    protected function collect($path)
     {
         ob_start();
+        /** @noinspection PhpIncludeInspection */
         require $path;
         $this->last_buffer = $this->buffer;
         $this->buffer = trim(ob_get_clean());
@@ -266,7 +267,7 @@ private function collect($path)
      * @param  array $only
      * @return array
      */
-    private function buildContext(array $data = [], array $only = null)
+    protected function buildContext(array $data = [], array $only = null)
     {
         $now = is_null($only)
             ? $this->data()