initial commit
changes to method param names. unit tests
subgrad doc
Merge branch 'master' of https://github.com/Theano/Theano
subgrad: remove print from unit test
changed name subgrad -> hypograd
Merge branch 'master' of https://github.com/Theano/Theano
rerenamed hypograph -> subgraph_grad
Merge pull request #1762 from nicholas-leonard/master

Add subgraph_grad