Map Support
The release has a huge breaking change: rather than use proplists to represent Json, it uses maps.
- All to_json functions generate maps.
- All from_json functions expect maps.
- All mutator functions should expect the Json as a map.
- Adding properties to a json can be done using a map as well as a 2-tuple.
- Removed support for deprecated and broken "scan_string" and "scan_file". Rec2json only uses the parse transform style now.