Tests fail against colander 1.7.0

[risicle]

Only a single, quite subtle failure:

======================================================================
FAIL: test_dictify_with_null (tests.test_schema.TestsSQLAlchemySchemaNode)
Test SQLAlchemySchemaNode.dictify(obj) with null values
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/build/ColanderAlchemy-0.3.3/tests/test_schema.py", line 463, in test_dictify_with_null
    self.assertEqual(appstruct, newappstruct)
AssertionError: {'institution_id': None, 'sensor_id': 3, 'sensor_label': <colander.null>} != {'institution_id': <colander.null>, 'sensor_id': 3, 'sensor_label': <colander.nu [truncated]...
- {'institution_id': None, 'sensor_id': 3, 'sensor_label': <colander.null>}
+ {'institution_id': <colander.null>,
+  'sensor_id': 3,
+  'sensor_label': <colander.null>}

which is presumably caused by this Pylons/colander#204 (comment)

[tisdall]

I've fixed the tests so they now work with the latest version of colander. I didn't create a new release, though, as there's no functional changes. Do you need a new release for what you're doing so the test included with the package pass?

[tisdall]

The package doesn't actually include the tests, but I put out another release any way just to show that the project is still valid and running.