Version 3.2.1

fix problems in 'configure.ac' Now it should also work on Mac

Version 3.2.0

fix problems with roxygen docu in 'correlators_key_meson_3pt' and 'cf_key_meson_3pt'
faster implementation of 'plotwitherror'
allow to plot a bootstrap nlsfit on top of existing plot
Add some tests for 'computeDisc' function