title: Is numpy.save cross platform?
body: <p>Suppose I save a numpy array to a file, "arr.npy", using numpy.save() and that I do this using a particular python version, numpy version, and OS.</p>
  
  <p>Can I load, using numpy.load(), arr.npy on a different OS using a different version of python or numpy?  Are there any restrictions, such as backwards compatibility?  </p>