docs updated for future changes in functions
minor doc fixes
notes on available models and how they are calculated
fixed elastic_omega_g_only_vss
fixed raw_crosssection_elastic_VSS and fixed incorrect fix of elastic_omega_g_only_vss
notes on raw_crosssection_elastic_VSS
fixed crosssection_elastic, raw_crosssection_vt_fho, raw_crosssection_vv_fho
added VSS model to dissociation integral and cross-section functions, replaced rig_sphere with model parameter, merged raw VSS and RS versions of vv and vt functions
added VSS model and model parameter, replaced _rigid_sphere_ in function names with _integral_
merged raw functions (now 2 instead of 4), replaced rig_sphere parameter with model parameter
comments updated
replaced rig_sphere with model parameter
new docs
new docs
new docs
new docs
v0.3