Thank you for your willingness to help make NumPy the best array system available. We have a few simple rules: * try hard to keep the SVN repository in a buildable state and to not indiscriminately muck with what others have contributed. * Simple changes (including bug fixes) and obvious improvements are always welcome. Changes that fundamentally change behavior need discussion on numpy-discussions@scipy.org before anything is done. * Please add meaningful comments when you check changes in. These comments form the basis of the change-log. * Add unit tests to excercise new code, and regression tests whenever you fix a bug.