This is pappy:
"Probability distribution Amplification and Plotting in Python"

Python utilities for manipulating and plotting probability density 
functions, stored as importance-weighted lists of samples.

Authors: Phil Marshall <dr.phil.marshall@gmail.com> 
     and Daniel Foreman-Mackey <danfm@nyu.edu>
Date: 12 December, 2011


Installation:

  python setup.py install


To-do list:

=========
2013Jan31
L. Moustakas

Changes to make:
o Update the command line parsing to argparse, to enable 
  consistent functionality between unix or python prompts.
o Add option of showing fiducial / truth points in the plots.
o Add a "rich" option of showing the marginalization results
  in the top right of the figure.