implementation of the expr method
additional functionality
implementations of get_data_specs
I was confused about what  means. IMHO abbreviations should use capital letters
some monitoring channels stuff
fix comment to refer to data not X,Y
cost should not be aware of target
fix gradients to use data instead of X,Y
Default input/target source for any model
functions to be used by dataset/iterator to select a batch of data
implementation of get_batch_size
add Theano test values if needed to tensors
fix bug in __eq__ of CompositeSpace
make_theano_batach for composite type
fix SGD to work with new interface
making monitor work with new interface
work in progress commit