Singer Python SDK

The `singer-python` library provides essential utilities for implementing Singer protocol taps (data extractors) and targets (data loaders). It simplifies tasks like parsing configuration, managing state, and emitting/consuming standard Singer messages (schema, record, state, activate_version, log, batch). It is currently at version 6.8.0 and is actively maintained, though more opinionated frameworks like Meltano SDK are also available for higher-level abstractions built on the Singer protocol.