Package brms by Paul Bürkner (https://github.com/paul-buerkner/brms) is an elegant complement to
rstanarm with a large selection of models. The main drawback is that it there are no pre-compiled models as with
rstanarm, so running a model requires frequent recompiles.
Following a concept of Paul I have created a demo package brmspack to show how to use brms in a package with model compiled during installation.