Update more costs
Start handling (None, None) specs
Fix dim of VectorSpace
Fixes for cifar10_preprocessed_train.pkl
Fix fallback inference of data_specs
Fix crash when passing arguments to nosetests
Make prereqs accept *data
Fix lambda functions
Always provide data to DenseDesignMatrix
Fixes in number of args
Make sure data is always a tuple
Fix equality comparison of Spaces

We used to have spaces that were bot equal and different...
Update TransformerDataset to use data_specs
Use right method when inheriting from both Model and Block
Add optional set_input_space to some Blocks

Also fixes probably unused ExamplewiseUnitNormBlock
Merge pull request #7 from lamblin/interface_change_rebase

Interface change rebase