Add Serialisation Support

[hamidnazari]

e.g.

import json
json.dumps(car)

Should return the entire object in JSON.

Also should work for YAML, Pickle, Marshal, and other serialisers.

[tadman]

This is possible with:

print(json.dumps(data, default=lambda o: o.__dict__))

There really needs to be a better way than that, though.