Usage
control_family(family)
controls_dbglm(distance,weights,offset,rel.gvar,maxiter,eps1,eps2,y, method)
dbglm_iteration(y, mu, weights, nobs, eta, Delta, method, offset, n,
eff.rank = NULL, rel.gvar, dev.resids, aic, mu.eta, valideta, validmu,
family, variance, linkinv, problem.links, eps1,eps2,maxiter)