- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
  and .keys(), .items(), .values() return dict views.

The dict views aren't fully functional yet; in particular, they can't
be compared to sets yet.  but they are useful as "iterator wells".

There are still 27 failing unit tests; I expect that many of these
have fairly trivial fixes, but there are so many, I could use help.
diff --git a/Lib/compiler/misc.py b/Lib/compiler/misc.py
index 588c7fb..b32d0dc 100644
--- a/Lib/compiler/misc.py
+++ b/Lib/compiler/misc.py
@@ -18,7 +18,7 @@
     def add(self, elt):
         self.elts[elt] = elt
     def elements(self):
-        return self.elts.keys()
+        return list(self.elts.keys())
     def has_elt(self, elt):
         return elt in self.elts
     def remove(self, elt):