Cut version 0.0.1b6

Cut version 0.0.1b6

- Fix docs after rename
- Rename some directories (e.g. typez -> types) since they don't collide with any stdlib names.
- Add better docs with an example to SharedDict.
- Add id_generator_test.
- Add run_tests.py to the examples/README list.
- Make run_tests_serially.sh skip zookeeper_test.py too.
- Teach run_tests.py to abort inflight tests in case of emergency shutdown.
- Fix wrong TimeoutError in catch.
- Get reminder to stop leaving turds around my filesystem.
- Docs for dataclass_utils.
- Add dataclass_utils for some simple dataclass wrappers and annotation.
- Improve documentation / doctests.
- Update documentation.
- Cut version 0.0.1b5