test failures in -0.2.1; test_choices test_null_form_saving
The latest version, 0.2.3, is passing for me.
 sorry, still get 1 fail;  Updated to peewee>=2.0.0, also wtforms.
$ python -V
Python 2.7.6

``` python
wtf-peewee-0.2.3 $ PYTHONPATH=. python ./runtests.py 
test_blog_form (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_blog_form_saving (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_blog_form_with_obj (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_choices (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_defaults (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_entry_form (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_entry_form_saving (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_entry_form_with_obj (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_form_multiple (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_form_with_only_exclude (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_hidden_field (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_hidden_field_none (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_non_int_pk (wtfpeewee.tests.WTFPeeweeTestCase) ... ok
test_null_form_saving (wtfpeewee.tests.WTFPeeweeTestCase) ... FAIL

======================================================================
FAIL: test_null_form_saving (wtfpeewee.tests.WTFPeeweeTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/mnt/gen2/TmpDir/portage/dev-python/wtf-peewee-0.2.3/work/wtf-peewee-0.2.3/wtfpeewee/tests.py", line 348, in test_null_form_saving
    self.assertEqual(nfm.b, True)
AssertionError: False != True

----------------------------------------------------------------------
Ran 14 tests in 0.097s

FAILED (failures=1)
```

tested under only py2.7.

``` python
======================================================
FAIL: test_choices (wtfpeewee.tests.WTFPeeweeTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/mnt/gen2/TmpDir/portage/dev-python/wtf-peewee-0.2.1/work/wtf-peewee-0.2.1/wtfpeewee/tests.py", line 162, in test_choices
    self.assertFalse(form.validate())
AssertionError: True is not false

=====================================================
FAIL: test_null_form_saving (wtfpeewee.tests.WTFPeeweeTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/mnt/gen2/TmpDir/portage/dev-python/wtf-peewee-0.2.1/work/wtf-peewee-0.2.1/wtfpeewee/tests.py", line 330, in test_null_form_saving
    self.assertEqual(nfm.b, True)
AssertionError: False != True

----------------------------------------------------------------------
Ran 13 tests in 0.058s

FAILED (failures=2)
```

Do you replicate? Do you require anything further.
