added performance test for neo4j
added first neo4j serializers test
added serializeWithRelation
extracted deserialize methods
renamed method name
created serializeWithRelationships method
adding type info to every node
moved neo4j up
added graphviz visualization utils class
added some tests
cosmetic
added TemporaryFolder rule
fixed parent ref
added tests
fixed relations
cosmetic
adding label
switched to labels instead of type property
ignoring performance test
added schema test