Removed all friends of JsonValue

include/ArduinoJson/Internals/JsonValueInternal.hpp

@@ -0,0 +1,25 @@
+// Copyright Benoit Blanchon 2014
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+
+#pragma once
+
+#include "../JsonValue.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+class JsonValueInternal : public JsonValue {
+ public:
+  explicit JsonValueInternal(Internals::JsonNode* node) : JsonValue(node) {}
+
+  void moveToNext() { _node = _node->next; }
+
+  bool isSameAs(const JsonValueInternal& other) const {
+    return _node == other._node;
+  }
+};
+}
+}