Fixed problem serializing Property on Edge for GraphSON #367
removed mergeOperator from Gremlin Sacks for now. Was too crazy to deal with -- was all up in how we serialize traversers in OLAP and was difficult to conceptualize (will only lead to problems for developers). Need to work out hte mechanics better and then can reintroduce. For now, Gremlin Sacks is a data efficient path()-reduction model.
Operator back to Number only.