[WIP] utils.visualize_util improvements

[julienr]

This improves visualize_util.plot with :

• Support for container layers (using recursive=True to show container details)
• Shape information in the plot (using show_shape=True)

Here is a notebook with some test networks showing what this does.

I haven't tested it extensively, so I would consider it work in progress for now. I would also like feedback for further improvements & options.

[fchollet]

Do you have some sample outputs? I'd be interested to check it out.

[julienr]

There is an example notebook here :
https://github.com/julienr/ipynb_playground/blob/master/keras/visutils_model2dot.ipynb
(nbviewer link if the github renderer doesn't work)

Or do you mean something else ?

[fchollet]

Cool, thanks. We'll merge this after we release Keras 0.3.