April 1, 2013
0.1.4
  Added RDFfromDX.py script
0.1.3
  Changed RDF to interpolate from 200 points
  Added simple RDF tests
Mar 20, 2013
0.1.2
  Allowed dx reader to read different dx formats.

0.1.1
  - Fixed bug in getlinearweightsandindices in the case of lying exactly
    on a grid point.
