cleanup
work on making end-to-end acks work
all (well-formed) test apps work
Merge branch 'master' into e2e-real

Conflicts:
	urb/urbit.pill
Merge branch 'master' into e2e-real

Conflicts:
	urb/urbit.pill
e2e-acks in a consistent state, ready to merge
Merge branch 'master' into e2e-real

Conflicts:
	urb/urbit.pill
	urb/zod/arvo/gall.hoon
	urb/zod/arvo/zuse.hoon
most of new chat
chat is working
Merge branch 'master' into e2e-real

Conflicts:
	urb/urbit.pill
fixed structures
Merge branch 'master' into e2e-real

Conflicts:
	urb/urbit.pill