- fixed docstring in clusters.ClusterEnsemble().deltasigma_nfw() to correctly state that it does do the miscentering calculation
- clusters.ClusterEnsemble() accepts input cosmology as any astropy.cosmology object
- fixed miss-spelling of "richness" in function names:
- mass_to_richess() => mass_to_richness()
- richess_to_mass() => richness_to_mass()
- confirmed compatibility with Python 3.4, 3.5