v0.13.4

What's Changed

• fix(query): preserve 'groupby' by @lukasmalkmus in https://github.com/axiomhq/axiom-go/pull/176
• chore: code grooming by @lukasmalkmus in https://github.com/axiomhq/axiom-go/pull/177

Full Changelog: https://github.com/axiomhq/axiom-go/compare/v0.13.3...v0.13.4