GitLab

* fix

* Outline Keypoints API

* Add utility

* make it work :)

* Fix optional type

* Add connectivity, fmassa's advice 😃



* Minor code improvement

* small fix

* fix implementation

* Add tests

* Fix tests

* Update colors

* Fix bug and test more robustly

* Add a comment, merge stuff

* Fix fmt

* Support single str for merging

* Remove unnecessary vars.
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>