- Try to acquire lock at runtime, not just on `apply_sync()`, which works around issues with `send_task()` and `celery beat` not even using `apply_sync()`. - Supports str instead of lambda for task `key`.
0.5.0
Add support for providing rate limits based off the function key, task, args, and/or kwargs.
0.4.0
- Added a new `only_after` helper. - Fix a dependency issue on Python 3.7 caused by the `5.0.0` release of `importlib-metadata` (https://github.com/python/importlib_metadata/issues/411)
0.3.0
0.2.0
Added support (enabled by default) for "silent" unique tasks, which will simply return the existing tasks's AsyncResult instead of raising an exception, making it fairly transparent.