What's Changed
* implement get_flavors hookup on modfilelist by iccode17 in https://github.com/nbiotcloud/ucdp/pull/82
* complete API doc by iccode17 in https://github.com/nbiotcloud/ucdp/pull/83
* let 'ucdp check' fail with traceback on error by iccode17 in https://github.com/nbiotcloud/ucdp/pull/84
* improve error message by iccode17 in https://github.com/nbiotcloud/ucdp/pull/85
**Full Changelog**: https://github.com/nbiotcloud/ucdp/compare/v0.27.2...v0.28.0