ANN: discover 0.3.0 released, automatic test discovery for unittest

[Fuzzyman]

The discover module is a backport of the automatic test discovery from
the unittest module in Python-trunk (what will become Python 2.7 and
3.2).

The discover module should work on versions of Python 2.4 upwards:

* discover module on PyPI: http://pypi.python.org/pypi/discover

The discover module can be used to run all, or a subset, of your
unittest based tests automatically from the command line. See the PyPI
page for details.

Version 0.3.0 has two new features:

* Failing to import a file (e.g. due to a syntax error) no longer
halts discovery but is reported as an error.
* Discovery will not attempt to import test files whose names are not
valid Python identifiers, even if they match the pattern.