Removed all friends of JsonValue

include/ArduinoJson/JsonPair.hpp

@@ -0,0 +1,25 @@
+// Copyright Benoit Blanchon 2014
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+
+#pragma once
+
+#include "Internals/JsonValueInternal.hpp"
+
+namespace ArduinoJson {
+class JsonPair {
+ public:
+  const char *key() const { return _node->getAsObjectKey(); }
+
+  JsonValue value() {
+    return Internals::JsonValueInternal(_node->getAsObjectValue());
+  }
+
+ protected:
+  explicit JsonPair(Internals::JsonNode *node) : _node(node) {}
+
+  Internals::JsonNode *_node;
+};
+}