Begin removing dependency on p4est_connectivity in main programs.
It is still possible to create a domain out of a generic connectivity, but for most standard connectivities there are wrappers provided. For these, the domain can be created without explicitly creating a p4est_connectivity first. The mappings can obtain everything that is in the p4est_connectivity from the domain, which is notably done with the brick geometry.
Begin removing dependency on p4est_connectivity in main programs. It is still possible to create a domain out of a generic connectivity, but for most standard connectivities there are wrappers provided. For these, the domain can be created without explicitly creating a p4est_connectivity first. The mappings can obtain everything that is in the p4est_connectivity from the domain, which is notably done with the brick geometry.