add a note in the todo about python 3.3

Michael Merickel

2016-04-14 88637857ca84eb74fd318ad1bf8c4464e50ae662

add a note in the todo about python 3.3

 TODO.txt

@@ -124,6 +124,7 @@
  ``hashalg`` to ``sha512``.

- 1.8: Remove set_request_property.
- 1.8: Drop Python 3.3 support.

- 1.9: Remove extra code enabling ``pyramid.security.remember(principal=...)``
  and force use of ``userid``.