Python SDK v0.28.0

Changelog

Features

• Add span origin provenance (#570)

Bug Fixes

• (litellm) Use allowlist for span metadata (#578)
• Preserve custom PYTHON_ENV span origin (#577)

Package: https://pypi.org/project/braintrust/0.28.0/

Full Changelog: py-sdk-v0.27.0...py-sdk-v0.28.0