Dirichlet-multinomial density and (P)RNGs

[syclik]

From @bob-carpenter on November 11, 2014 16:31

• [ ] density
  • [ ] dirichlet_multinomial_lpdf function
  • [ ] distribution tests
  • [ ] model instantiation tests
  • [ ] doc for manual
  • example for manual in programming section; perhaps a new chapter on overdispersion
• [ ] PRNG
  • [ ] dirichlet_multinomial_rng function
  • [ ] distribution and PRNG tests
  • [ ] doc for manual
  • [ ] model instantiation tests

Copied from original issue: stan-dev/stan#1130