Released Wed September 12, 2018
* Re-wrote reset_weights; just recompiles model
* Fixed error in gridfont loader
* All widgets/pictures are JupyterLab compatible
* Added support for dynamic_pictures on/off; default is off
* SVG arrows are now curves
* New algorithm for bank layout in SVG
* moved dataset.get() to Dataset.get() and net.get_dataset()
* new virtual datasets API, including vmnist, H5Dataset (remote and local)
* better cache in virtual datasets
* Allow dropout to operate on 0, 1, 2, or 3 whole dims
* Added cx.Layer(bidirectional=mode)
* Show network banks as red until compiled
* Rewrote and renamed net.test() to net.evaluate() and net.evaluate_and_label()
* net.evaluate() for showing results
* net.evaluate_and_label() for use in plots