set new defaults for --cna-rnd [double:1.0e-6] etc.
why so many BAF jumps?
update of coarse_grain_jumps()

With this update, baf-jumps-file can be used for --cna-jumps
and vice versa. Coordinates are matched, pjump is integrated.
mod changelog
bugfix for chrs with no non-zero obs
bugfix for chrs with no non-zero obs?
patch v1.17.8