These include Relax_disp.test_hansen_cpmg_data_ns_2site_expanded,
Relax_disp.test_hansen_cpmg_data_ns_2site_star and
Relax_disp.test_hansen_cpmg_data_ns_2site_star_full.
This checks the 'NS 2-site expanded', 'NS 2-site star', and 'NS 2-site star full' numerical
dispersion models against some truncated CPMG data from Flemming Hansen. The parameter checks have
not been updated for the 'NS 2-site expanded' and 'NS 2-site star full' models as there appears to
be bugs.
