v0.5.1

What's Changed

• fix: use toJson() for override serialization to include all fields by @kraenhansen in https://github.com/elevenlabs/elevenlabs-flutter/pull/27
• chore: bump version to 0.5.1 by @kraenhansen in https://github.com/elevenlabs/elevenlabs-flutter/pull/28

Full Changelog: https://github.com/elevenlabs/elevenlabs-flutter/compare/v0.5.0...v0.5.1