Frank-Wolfe SOSVM solver
extend xval nb
gridsearch and examples
add table + cleanups
Merge pull request #2390 from Saurabh7/xvalnb

extend xval nb
updated to latest data-checkout
simplified the way convolutional nets are constructed
added convolutional autoencoders to the autoencoders notebook
Merge pull request #2471 from khalednasr/conv_autoencoder_notebook

Added convolutional autoencoders to the autoencoders notebook
Merge pull request #2354 from hushell/bcfw

Frank-Wolfe SOSVM solver