Support for paths

[rnix]

There appears to be no support for returning paths. I think adding such support will ease the lack of a traversal API. e.g. it would be great to do something like:

cq := `start node=node(1) match path=node-[*]->(endpoint :leaf) return node,path,endpoint`
type response struct {
    Node neoism.Node `json:"node"`
    Path neoism.Path `json:"path"`
    Endpoint neoism.Node `json:"endpoint"`
} // note: Node and Endpoint are redundant if Path worked

Effectively finding me all the paths from node 1 to any leaves. So a Path can be a struct with []*Relationships (or Rels) + the db fields. With that information, i'd easily be able to walk from Path[0].Start() to Path[-1].End().

disclaimer: i do understand that i can iterate from the node myself through node.Outgoing() recursively and it wouldn't be much difference, but being able to specify the structure of the expected path declaratively is the real win with Path support.

[jmcvetta]

Please feel free to submit a Pull Request with your suggested changes. Contributions are happily accepted!