Fixes for monitoring channels
Revert changes to DenseDesignMatrix, use new iterator interface
Add VectorSpacesDataset instead of using DenseDesignMatrix
Build the data_specs only when we have the model
Call the accum function in monitor
Keep add_channel interface compatible, generate data_specs if needed
Small changes
Build X_topo_space from view_converter if possible
Make sure the default iterators return only X, not in a tuple
Fix to previous commit
Other small fixes
Conversion of BGD
Merge pull request #5 from lamblin/interface_change

New iteration