Changes

<onlyinclude>This is a minor feature and bugfix release which has improvements for the handling of structural data involving multiple molecules or models and improved support in the NOE analysis for replicated spectra. Included are fixes for the failure of the [http://www.nmr-relax.com/manual/structure_create_diff_tensor_pdb.html structure.create_diff_tensor_pdb user function] for non-spherical diffusion tensors when no Monte Carlo simulations are present and for the failure of the [http://www.nmr-relax.com/manual/rdc_write.html rdc.write user function] for back calculated RDC data. Full details are given below. </onlyinclude>