Changes

<onlyinclude>This is a minor documentation release which includes small improvements to the documentation of the [http://www.nmr-relax.com/manual/Relaxation_dispersion.html relaxation dispersion analysis in the manual] as well as the API documentation for the lib.dispersion package. As the manual is available from http://download.gna.org/relax/manual/relax.pdf, installing this newer version of relax is not necessary. </onlyinclude>