relax SVN archive

Merged the CHANGES file for relax version 1.3.13 back into the main 1.3 line.

The command used was:
svn merge -r14994:14995 svn+ssh://bugman@.../svn/relax/tags/1.3.13

Updated the CHANGES file for relax 1.3.13.

relax version 1.3.13.

This release introduces the second version of the relax GUI. This is a major rewrite of the entire
GUI code base. The GUI should now be much more flexible, being able to handle all the different
ways NMR data is collected and errors are measured. It now has the full flexibility of the prompt/
scripting interface by the implementation of GUI versions of the user functions and now supports
small organic molecules, RNA, DNA, sugars, etc. This flexibility will allow all other analysis
types (reduced spectral density mapping, N-state model, the frame order theory, consistency testing,
etc.) to be added to the GUI in the future. The GUI is now fully tested and fully functional and
bug free on all major platforms including GNU/Linux, Mac OS X and MS Windows.

In addition, there are improvements to the frame order theory. And significant bug fixes throughout
the program.

Fix for the precision of the chi2 value check in the N_state_model.test_monte_carlo_sims system test.

This affects 32-bit GNU/Linux and not 64-bit GNU/Linux. Other operating systems are unknown if this
test previously passed or not.

Changed the name of the model_num arg to model in the centre_of_mass() function.

Added the atom ID argument to the structure.rotate and structure.translate user functions.

This allows subsets of molecules or models to be translated and rotated.

The generic_fns.structure.mass.centre_of_mass() function now accepts the model number arg.

This allows specific models to be isolated.

The generic_fns.structure.mass.centre_of_mass() function now accepts the atom ID arg.

This allows the centre of mass of subsets of the structure to be calculated.

Fix for the negative cone PDB representation in the frame order theory.

Fixes for the negative cone creation in the frame_order.cone_pdb user function.