1)Fixed a bug in collisional-switching parameter CRSW not being reset to 1 after C-R switching is used
2)Some FirstTime blocks were put in place assuming that one was doing a synthesis, but in inversion or multiple synthesis the FirstTime block should be redone again for each synthesis. Searched the code under forward/ for occurrences of FirstTime and fixed those that should be redone for recurrent syntheses
3)Minor updates to manual
4)Fixed a bug in z_to_tau, it was missing some calls to compute_others_from_pe_pg