Introduce `serializable_fields` to express which class attributes to be serialized. Get rid of OrderedDict. Just replacing it with regular dict. Change-Id: I3f7639dab171d3d62e92d0d1bb6d7b071cf963ad
Reformats copyright messages to be comments rather than docstring-style blocks. Change-Id: I4d863f53b67bb49d03bda0952b9e6179b6d23c59