bunch 20+ duplicate counts together
print q=0 for really bad quality, q=41 for 'infinite quality'. Output perfect histo & fuzzy histo. Don't output quality stats > 50.
a delete has quality 40, not 'X'
add GC content counting to reference genome, replace 'seriously' by 'significantly', clean various things
use getSangerQuality, plus no longer match reads that have too many low-Q mismatches