* `NetGraphMsgHandler` now takes a `Deref` to the `NetworkGraph`, allowing for
shared references to the graph data to make serialization and references to
the graph data in the `InvoicePayer`'s `Router` simpler (#1149).
* `NetGraphMsgHandler` now takes a `Deref` to the `NetworkGraph`, allowing for
shared references to the graph data to make serialization and references to
the graph data in the `InvoicePayer`'s `Router` simpler (#1149).