Project-root is the default location for these helper files, and they are being
examined as part of pep8 runs. This change will ensure they are ignored in this case.

We do this intentionally, to preserve tracebacks

Uncommenting the pdb=1 line will cause pdb to open on every test
failure, allowing immediate debugging of the failure case

Use setup.cfg to set up default settings when running nose tests. Enable
the rednose library to color test output.