Simpervisor: Simple Async Process Supervisor

Simpervisor is a lightweight Python library providing an asynchronous process supervisor. It offers the `SupervisedProcess` class to manage external processes with async methods like `start`, `ready`, `terminate`, and `kill`. The library is actively maintained, with its latest major release (1.0.0) in May 2023, indicating a stable but less frequent release cadence focused on robustness.