Separate SmSn from Gremlin Server #64
Description
The dependency of SmSn on Gremlin Server has been a major maintenance burden, and greatly complicates the initial deployment of SmSn for new users. TinkerPop integration should be optional for SmSn v2 (LambdaBrain?). It should be straightforward to provide a WebSocket-based server which is specific to SmSn, avoiding future migration and maintenance issues.
cc @jmatsushita