renaming of vt_integral_fho and vv_integral_fho, whitespace added
whitespace added
added VSS model to crosssection_diss, renamed raw_vt_integral_fho and raw_vv_integral_fho, replaced rig_sphere with model parameter
changed bool rig_sphere parameter to str model parameter, renamed raw rate functions (VSS name explicitly included)
rig_sphere parameter removed, fixes in crosssection_elastic, raw_crosssection_vt_fho and raw_crosssection_vv_fho