removing some bugs in sgd.py
adding changes to the sgd.py
updating mlp.py
removing comment
updating mlp.py
add NLL cost
fixed run_deep_trainer and updated the docs
added a unit test for the run_deep_trainer.py
correct the bugs
Add padding code + tests.
Merge pull request #196 from dwf/pad_in_window_flip

Add padding code + tests.
added unit test verifying that not specifying dropout is same as setting
include prob to 1
refactored kl divergence for Sigmoid
allowed plotting with hours on the x axis
added more info to the environment variables essay
added a note about ipython version to the tutorials README
Merge branch 'master' of github.com:lisa-lab/pylearn2
remove file that was meant to have been moved to pylearn2.deprecated
added reference to train example (it was already in the class definition
too)
fix typo in error message