Test failure with Python 3.3

[Arfrever]

Colander 0.9.9 introduced test_serialize_quantize_no_rounding(), which fails with Python 3.3. It passes with older versions of Python.

$ python3.3 setup.py test
...
======================================================================
ERROR: test_serialize_quantize_no_rounding (colander.tests.test_colander.TestDecimal)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/colander-0.9.9/colander/__init__.py", line 1035, in serialize
    return str(self.num(appstruct))
  File "/tmp/colander-0.9.9/colander/__init__.py", line 1109, in num
    result = result.quantize(self.quant, self.rounding)
TypeError: an integer is required

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/tmp/colander-0.9.9/colander/tests/test_colander.py", line 1371, in test_serialize_quantize_no_rounding
    result = typ.serialize(node, val)
  File "/tmp/colander-0.9.9/colander/__init__.py", line 1039, in serialize
    mapping={'val':appstruct}),
colander.Invalid: {'': '".000001" is not a number'}

----------------------------------------------------------------------
Ran 335 tests in 0.195s

FAILED (errors=1)

[mcdonc]

Thanks!