OGM-406 Upgrade Neo4j to 2.0.1
OGM-406 Add transaction demarcation in unit tests where missing
OGM-367 Move Neo4SequenceGenerator and Neo4jTypeConverter in the dialect package
OGM-377 GridDialect#executeBackendQuery returns a Closable iterator
OGM-367 Use cypher queries and labels instead of indexes in Neo4j
OGM-367 Clean up Neo4jTupleSnapshot
OGM-372 Support Neo4j queries