- Cookies generated via webob.cookies quoted characters in cookie values that
  did not need to be quoted per RFC 6265.  The following characters are no
  longer quoted in cookie values: ``~/=<>()[]{}?@`` .  The full set of
  non-letter-or-digit unquoted cookie value characters is now
  ``!#$%&'*+-.^_`|~/: =<>()[]{}?@``.  See
  http://tools.ietf.org/html/rfc6265#section-4.1.1 for more information.

- Cookie names are now restricted to the set of characters expected by RFC
  6265.  Previously they could contain unsupported characters such as ``/``.
typo