Support parsing non-standard JSON where Object keys are not quoted

For some use cases it would be beneficial to allow parsing of non-standard Json content, where Object field/key names are not quoted (are not surrounded by double
quotes). White space or colon then indicate where the key ends.

Benefits include interoperability (some systems assume that keys need not be quoted, since javascript does not require this) and slightly less verbose content.

Benefit:
1. 5% - 35% space saving
2. Might improve parse speed

Example 1
99 byte, {"name":"John","age":30,"status":2,"email":"john_marcus@gmail.com","hobbies":"football,basketball"}
90 byte, {name:"John",age:30,status:2,email:"john_marcus@gmail.com",hobbies:"football,basketball"}

Example 2
51 byte, {"Mo":1,"Tu":2,"We":3,"Th":4,"Fr":5,"Sa":6,"Su":7}
37 byte, {Mo:1,Tu:2,We:3,Th:4,Fr:5,Sa:6,Su:7}