First rendition of an egonet endpoint.  Performs the entire computation on the fly.
Adding a switch to enable/disable reporting of edges incident to the source.
Adding a switch to report vertex types and edge types.  Edge types are reported as part of the egonet array.  With get_etypes enabled, each edge is an array of three members where the third is the type.  This is true for both numeric and string edge lists.  Vertex types are reported in a separate array.
These includes were no longer needed.
Merge pull request #46 from davidediger/egonet

Add an RPC endpoint that returns an egonet around a vertex