remove debug code from example
setup and nosetest skeleton
remove old tests
make sklearn a requirement
bias
remove eta and refactor
readme fix
initial sparse matrix version (not functioning)
functioning sparse matrix support (really slow)
sparsity optimisations
generalise sparse/non-sparse
fix sparsity predictions + minmise example
better tests
Merge pull request #4 from ejlb/master

Sparsity support