Add support for Erlang 18
Add support for Erlang 18

kevinmontuori/nitrogen,joaohf/nitrogen,nitrogen/nitrogen,choptastic/nitrogen,stuart-thackray/nitrogen,joaohf/nitrogen,kevinmontuori/nitrogen,nitrogen/nitrogen,nitrogen/nitrogen,kevinmontuori/nitrogen,stuart-thackray/nitrogen,choptastic/nitrogen,stuart-thackray/nitrogen,joaohf/nitrogen,choptastic/nitrogen