Parse data not in a data structure

[toddallen97]

The current implementation of JSONParser does not correctly parse data not in a structure, like a single integer or float. In example:

local a = "77";
local b = JSONParser.parse(a)
server.log("Value " + b + " has type " + typeof b)

local c = http.jsondecode("77")
server.log("Value " + c + " has type " + typeof c)

Returns:

Value 77 has type string
Value 77 has type integer

I've added a few lines of code to save the last state of the state machine as to make JSONParser more consistent with http.jsondecode()'s implementation.

[betzrhodes]

Nice catch. Thank you.