Eric Walker added Coronaviruses (CoV) to Coronaviridae, and added Coronaviridae to Nidovirales

Eric Walker added Coronaviridae to Nidovirales, and added Nidovirales to Pisoniviricetes

Eric Walker added Picornavirales and Nidovirales to Pisoniviricetes, and added Pisoniviricetes to Pisuviricota