v0.9.0

This is a maintenance release with some CI and documentation changes, and introduction of the grafana/xk6 Docker image. There are no functional changes in xk6 itself.

What's Changed

• Maintenance/GitHub actions by @olegbespalov in #58
• Remove experimental warning from README by @imiric in #61
• Add Dockerfile and publish image to container registries by @imiric in #62
• Remove goreleaser by @imiric in #63

New Contributors

• @olegbespalov made their first contribution in #58

Full Changelog: v0.8.1...v0.9.0