Tor-async-util

Added

- Nothing

Changed

- twine 1.10.0 -> 1.11.0
- specification of the tornado version removed from setup.py so that consuming packages now need to specify

Removed

- removed tor_async_util_nosetests given dev_env_nosetests.py exists

Added

- Nothing

Changed

- ndg-httpsclient 0.4.3 -> 0.4.4
- refactored support for implementing /_health endpoint

Removed

- Nothing

Added

- tornado 4.0.0 is a min pre-req
- AsyncAction ctr now sets property id to a unique identifier for each
AsyncAction instance - this will be useful for logging and debugging
create_log_msg_for_http_client_response
- AsyncAction.create_log_msg_for_http_client_response()
replaces write_http_client_response_to_log()
- added ExponentialBackoffRetryStrategy() utility class

Changed

- pep8 -> pycodestyle
- async state

Removed

- write_http_client_response_to_log() removed and replaced
with AsyncAction.create_log_msg_for_http_client_response()

Changed
- python-keyczar 0.715 -> 0.716

Added
- added tor_async_util.generate_version_response()

Changed
- simplified tor_async_util.AsyncHealthCheck's callback signature
and responsibilities