* (Breaking) Modify client initialization to allow jitter configuration on refresh/background refresh intervals. May break code when parameters to UnleashClient are not used as keyword arguments. Thanks dryobates and jstolarski!
* (Major) If client is already initialized, calling `initialize_client()` again won't re-run initialization.
* (Minor) Support HTTP 304 on `/client/feature` endpoint.
* (Minor) Rename `master` to `main`.
* (Documentation) Document running UnleashClient in uWSGI. Thanks sighphyre!
* (Documentation) Fix links and formatting. Thanks thomasheartman & sighphyre!