Add dictionary support

[Morpheus3000]

Thanks for the great work on something essential that was sorely missing! I saw that it didn't have dictionary support. I personally use dictionary for outputs of my network, since they are hashed and is faster than using lists for multiple outputs, albeit at a slightly more memory consumption. On top of that, using dictionaries, makes for more readable code.

[CptPirx]

Thanks! Works perfect for me, although I have not tested it extensively.