Tests to be added – one for the mean/variance for trace sampler and another with a huge matrix but not diagonal but having subdiagonal entries.
Add a test for distance two coloring on the sparse matrix operator itself and then trace samples compared with distance one coloring on power of the sparse matrix.
very important to have things in a very polished/documented/tested way. missing features are not that important. rather have the existing things working well. there can be many examples given, eigen solvers, linear solvers, log det esitmators, computation framework examples. Use matplotlib for plots, iypthon notebook –pylab inline.