v0.6.8

What's Changed

• feat(gmctl): fix bugs by @huerni in #5
• feat(pkg): fix mysqlconfig bug by @huerni in #6
• feat(gmctl): proto router add servername by @huerni in #7
• Feat/gmctl by @huerni in #8
• feat(pkg): errno add Err by @huerni in #9
• Feat/gmctl by @huerni in #10
• feat(pkg): add config optional by @huerni in #11

Full Changelog: v0.6.6...v0.6.8