Release v4.0.4

What's Changed

• modernize nix a little by @michaelglass in #173
• Add headers to consumed/produced records by @sigevsky in #179
• Build in Github Actions by @AlexeyRaga in #183
• Fix CI by @newhoggy in #185
• Do not allow batch poll and rebalance to happen in parallel by @michaelglass in #176
• Fix pointer for header_get_all by @AlexeyRaga in #190

New Contributors

• @michaelglass made their first contribution in #173
• @sigevsky made their first contribution in #179

Full Changelog: v4.0.3...v4.0.4