!273 Add graphviz to dev.yml for beat.cmdeline tests
!274 Fix queryset related issue as latest versions of django rest framework makes it mandatory to either provide a queryset property or get_queryset method.
!275 ZMQ refactoring that implements a new version of the scheduling in beat.web taking advantage of the new implementation in beat.core. There are now additional django commands that allows to manage the scheduler, broker and worker directly from there
!276 Update bob/beat-devel to fix numpy-base issue
!277 Fix backup/restore by implementing natural key and foreign key handling for Profile and AccountSettings
!279 Restore command: validate sqlite version': SQLite version 3.26 introduced a change which is breaking the migration mechanism in Django thus the command will bailout since it's known to break. As an alternative to !278