Released Mon March 5, 2018
* SVG Network enhancements
* vertical and horizontal space
* fixed network drawing connection paths
* save keras functions
* don't crash in attempting to build propagate_from pathways
* added binary_to_int
* download() can rename file
* fixed mislabeled MNIST image
* better memory management when load cifar
* Network.train(verbose=0) returns proper values
* labels for finger dataset are now strings
* added labels for cx.view_image_list()
* fixed bug in len(dataset.labels)
* added layout to net.plot_layer_weights()
* added ImageLayer(keep_aspect_ratio)
* fixed bugs in datavector.shape
* added dataset.load(generator, count)
* fixed bugs in net.get_weights()/set_weights()
* added network.propagate_to_image(feature=NUM)