Hannah now tolerates LogIn and LogOut messages (but doesn't care about them)

src/Automaton.hs

@@ -86,6 +86,8 @@ answer state (Error {error}) = do
  - Ignore
  -}
 answer state@(Connected {}) (Okaeri {}) = return state
+answer state (LogIn {}) = return state
+answer state (LogOut {}) = return state
 answer state (Relay {}) = return state
 
 answer state message = do