v0.9.0

What's Changed

• ci: make sure 'go test ./...' works by @wolf31o2 in #50
• refactor: drop v5 support by @wolf31o2 in #51
• ci: run go tests by @wolf31o2 in #52
• ci: checkout submodules too by @wolf31o2 in #53
• ci: trigger automatic publishing of release and go docs on tag by @wolf31o2 in #55

Full Changelog: v6.0.0...v0.9.0