Fix two regressions that snuck in on #287

tests/test_elsewhere.py

@@ -8,15 +8,15 @@
 
 class TestAccountElsewhere(Harness):
 
-    def test_opt_in_can_changes_username(self):
+    def test_opt_in_can_change_username(self):
         account = TwitterAccount("alice", {})
         expected = "bob"
-        actual = account.opt_in("bob").username
+        actual = account.opt_in("bob")[0].username
         assert actual == expected, actual
 
     def test_opt_in_doesnt_have_to_change_username(self):
         self.make_participant("bob")
         account = TwitterAccount("alice", {})
         expected = account.participant
-        actual = account.opt_in("bob").username  # A random one.
+        actual = account.opt_in("bob")[0].username # A random one.
         assert actual == expected, actual