What's Changed
* Add logging format argument by RaphaelVRossi in https://github.com/thumbor/remotecv/pull/67
* Fixed converting image to grayscale when image is not RGB by RaphaelVRossi in https://github.com/thumbor/remotecv/pull/70
**Full Changelog**: https://github.com/thumbor/remotecv/compare/5.0.0...5.1.0