development: fixed threading issue when accessing data. Now should be thread safe
development: fixed threading issue when accessing data. Now should be thread safe

adamdahan/GraphKit,NinjaIshere/GKGraphKit,adamdahan/GraphKit,CosmicMind/Graph,GraphKit/swift,CosmicMind/GraphKit,GraphKit/GraphKit,CosmicMind/Graph,GraphKit/swift,GraphKit/GraphKit-swift,CosmicMind/GraphKit,GraphKit/GraphKit,GraphKit/GraphKit-swift