Added doc on sliding windows related operaitons
Fixed spelling
Added more info about inputs and restrictions
Fixed neigbours doc according to remarks
Merge github.com:Theano/Theano into doc_fix
Moved neighbours into tensor.nnet
Fixed typos, merged documentation, added references
fix clip bug.
Added tests for the other way around as well.
fixed the unit tests.
Added the comments.
Better error messge if we asked for cudnn but it isn't available.
Make CPU conv2d test use floatX.
small code cleanup
fix error detection.
doc to get error if we can't use cuDNN
pep8
Add theano.tensor.extra_ops.to_one_hot
Speed up DownsampleFactorMaxGrad.perform
doc