Update protocol number to 2.
Update protocol number to 2.

ohAitch/arvo,joemfb/arvo,urbit/urbit,jfranklin9000/urbit,ngzax/urbit,urbit/urbit,eglaysher/arvo,ngzax/urbit,ngzax/urbit,jfranklin9000/urbit,ngzax/urbit,jfranklin9000/urbit,ngzax/urbit,Fang-/arvo,ohAitch/arvo,cgyarvin/arvo,solri/arvo,urbit/urbit,ngzax/urbit,cgyarvin/arvo,jfranklin9000/urbit,urbit/urbit,jfranklin9000/urbit,joemfb/arvo,ngzax/urbit,belisarius222/arvo,belisarius222/arvo,urbit/urbit,urbit/urbit,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit