Release v0.4.0

What's Changed

• chore: Drop support for Python 3.8 by @ReubenFrankel in #1
• feat: Bump to latest SDK version with Python 3.9 support by @ReubenFrankel in #2

New Contributors

• @ReubenFrankel made their first contribution in #1

Full Changelog: v0.3.0...v0.4.0