Is Bulbs generally support graph databases, such as dgraph, Cayley?

[wahello]

Is Bulbs generally support graph databases, such as dgraph, Cayley?

[wahello]

@espeed For more general, maybe this project would tear apart to the following projects:
bulbs-core, bulbs-neo4j, bulbs-rexster, bulbs-titan, and other such as bulbs-caylay, bulbs-dgraph.