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()

test/StaticJsonBuffer/CMakeLists.txt

@@ -4,10 +4,6 @@
 
 add_executable(StaticJsonBufferTests 
 	alloc.cpp
-	createArray.cpp
-	createObject.cpp
-	parseArray.cpp
-	parseObject.cpp
 	size.cpp
 	startString.cpp
 )