changed default setting for Cosmo Hammer
Fixed the --all option to output proper contour points
--all now also ouptut the histogram, with not so many comments yet
Output of histogram now documented, function for reading it too
Updated the reading of derived param to follow the new scheme
Properly manage the deprecated warning
NS: separated initialisation from run
NS: added NS initialise to initialise.py
NS: run.py -- 1st attempt
NS: 1st working implementation of MPI.
NS: fixed last commit.
NS: trivial documentation
NS: fixed issue about 'init_MPI' undefined when analysing'
NS: fixing test_gaussian likelihood I
NS: fixing test_gaussian likelihood II
NS: test .param file for the test_gaussian likelihood improved.
Now also stores the 1d histograms
description of v2.0.5
Implementation of Nested Sampling with MPI

* nested_MPI:
  NS: test .param file for the test_gaussian likelihood improved.
  NS: fixing test_gaussian likelihood II
  NS: fixing test_gaussian likelihood I
  NS: fixed issue about 'init_MPI' undefined when analysing'
  NS: trivial documentation
  NS: fixed last commit.
  NS: 1st working implementation of MPI.
  NS: run.py -- 1st attempt
  NS: added NS initialise to initialise.py
  NS: separated initialisation from run
Update the VERSION number