This git will host the code integrating Sirius Diagrams into a Papyrus context.
The initial bugs are: 

571959: [Sirius][Diagram] Provide a class Diagram developped with Sirius
https://bugs.eclipse.org/bugs/show_bug.cgi?id=571959

571960: [Sirius][Diagram] Provide the code allowing to open a Sirius Diagram into Papyrus
https://bugs.eclipse.org/bugs/show_bug.cgi?id=571960

575856: [Sirius][Integration][Properties][Notation] The properties view for the Papyrus GMF Notation must be desactivated on Sirius Diagram
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575856

575859: [Sirius][Integration] The facet query org.eclipse.papyrus.infra.gmfdiag.modelexplorer.queries.IsDiagramContainer also find Sirius Diagram
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575859

577301: [Sirius] create and init a new git org.eclipse.papyrus-sirius to host new Sirius Diagram code for Papyrus
https://bugs.eclipse.org/bugs/show_bug.cgi?id=577301