A quick update: Github is now the official upstream for SimpleITK. Also the
Utilities/SetupForDevelopmentScript.sh has been updated to configure your check out to use the appropriate repositories for developments.
Additionally, we have enabled the Github merge button after the cross platform CI has passed and a review.
We still need to update the documentation, but if you are familiar with the ITK workflow or the general GitHub workflow you are all set.
Lastly, thanks for Kitware for hosting SimpleITK on itk.org, and for assisting with the transition.