I fired off the PR for Cypher support a few hours ago and looks like all of
the basic tests passed against the 1.9.X codebase. This is a refactoring of
Mans Singh's original contribution for Neo4J support to make it use
controller services that abstract away the underlying Cypher
implementation. I tested it against Neo4J and JanusGraph 0.3.1 w/
OpenCypher, and both looked good.