Asyncio-multisubscriber-queue

What's Changed
* Replace StopAsyncIteration with a sentinel value by smithk86 in https://github.com/smithk86/asyncio-multisubscriber-queue/pull/1

**Full Changelog**: https://github.com/smithk86/asyncio-multisubscriber-queue/compare/0.4.0...0.4.1

- Python 3.10 is required
- Typing improvements
- [Documentation](https://smithk86.github.io/asyncio-multisubscriber-queue)