ssian', 'binomial',
           'poisson', 'gamma' and 'geom'. If the family is preceded
           by a q (e.g. 'qgauss', or 'qpois') then quasi-likelihood is
           used; in particular, a dispersion estimate is computed.
           Preceding by an 'r' makes an attempt at robust (outlier-resistant)
           estimation. Combining q and r (e.g. 'family','qrpois') may
           work, if you're lucky.
         Density estimation-type families are 'dens', 'rate' and 'hazard'
           (hazard or 