Multivariate-from-Univariate (MfU) MCMC Sampler

Convenience functions for multivariate MCMC using univariate samplers including: slice sampler with stepout and shrinkage (Neal (2003) ), adaptive rejection sampler (Gilks and Wild (1992) ), adaptive rejection Metropolis (Gilks et al (1995) ), and univariate Metropolis with Gaussian proposal.