Don't use JsonBuffer to create or parse objects and arrays.

* Added DynamicJsonArray and StaticJsonArray
* Added DynamicJsonObject and StaticJsonObject
* Added DynamicJsonVariant and StaticJsonVariant
* Added deserializeJson()
* Removed JsonBuffer::parseArray(), parseObject() and parse()
* Removed JsonBuffer::createArray() and createObject()

examples/StringExample/StringExample.ino

@@ -11,13 +11,13 @@
 #include <ArduinoJson.h>
 
 void setup() {
-  DynamicJsonBuffer jsonBuffer;
+  DynamicJsonObject root;
 
   // You can use a String as your JSON input.
   // WARNING: the content of the String will be duplicated in the JsonBuffer.
   String input =
       "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
-  JsonObject& root = jsonBuffer.parseObject(input);
+  deserializeJson(root, input);
 
   // You can use a String to get an element of a JsonObject
   // No duplication is done.
@@ -71,4 +71,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a quick C++ course that explains
 // how your microcontroller stores strings in memory. On several occasions, it
 // shows how you can avoid String in your program.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/