Release v0.5

Imported code from a few of our projects and split it out into this package.

Supports:

- Serializing Dataclasses to and from json

The following data structures are implemented currently:

- Dataclass (nested)
- Union of types
- Optional types
- Lists and Tuples
- UUID and other "simple" types that have a 1:1 __str__ and __init__ that takes
  a "str"
- Datetime objects (serialized as ISOformat, including timezone offset but not
  Timezone name.)

Minor boasts:

- 100% test coverage
- 10/10 on pylint