Dynamic union graph

[plofgren]

Wraps a directed graph (e.g. a MemoryMappedDirectedGraph) and a dynamic directed graph to create a dynamic graph with the union of their nodes and edges. When edge are added, they are added to the underlying dynamic graph. Node or edge deletion is not supported.

@pankajgupta

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}