* New tool StutterModel fits polynomials to stutter ratio vs repeat
  length.
* Changed -R to -Q (--limit-reads) so that I can reassign -R to an
  option that is used more often.
* Changed -r to -R (--report) to make sure it will not collide with
  the -r option in Stuttermark, if I ever want to add report output
  to Stuttermark.
* BGHomStats now checks whether all alleles are detected