Tests fail for Python 3.x

[ppope]

Tests work under Python 2.7 as expected. However, with

$ python --version
Python 3.4.3 :: Anaconda 2.2.0 (64-bit)

Running

$ python ./test/test_sorted.py

Obtains (truncated traceback)

ERROR: test_inorder (__main__.SortedTest)
...
  File "./test/test_sorted.py", line 9, in sort
    items[:] = sorted(items)
TypeError: 'range' object does not support item assignment

and

ERROR: test_stability (__main__.SortedTest)
...
    items[:] = sorted(items)
TypeError: unorderable types: IntHolder() < IntHolder()

First error is due to range being a generator object by default in Python 3. See this SO post. Should be a quick fix by changing items = range(1,i,d) to items = list(range(1,i,d)) in sort_tester.py.

I'm not sure about the second just yet.