Ryan Marvin

Hi. I noticed the [OffsetDelete API](https://kafka.apache.org/24/protocol.html#The_Messages_OffsetDelete) is missing support in this library. Why is that so? If it's okay, I can open a pull request adding it

Stopping multiple consumers in a short window freezes on GroupCoordinator._heartbeat_routine()

6

**Describe the bug** I have several hundred consumers all connected to the same singular topic with autocommit disabled. Each consumer is part of a unique individual group. When I call...