v0.6.15

Bug fixes

• 404 when Repository name contains "git" #1593
• Collaborative repositories missing suburl on dashboard #1594
• Duplicate commit references when push a new branch #1595
• Upload image does not handle suburl #1603
• New SSH keys with comments including whitespace are truncated #1622
• Change label title resets color #1659

Improvements

• Able to use GOGS_WORK_DIR environment variable to specify work directory
• Enable login type conversion after account creation #748
• Sort owners list by last changed time when create and migrate repositoriy #1585

Features

• Add TiDB backend database support
• Add Emoji support #633
• Able to disable captcha by config option [service] ENABLE_CAPTCHA = false #697
• Able to restrict SMTP authentication to specific domains #1620

Others

• Drop social account login support