case sensitivity [was: 16.2 not as effective]

[Clint Adams]

> Because bogofilter's defaults didn't change from 0.15.13 to 0.16.0, I
> was looking for other reasons for a change in accuracy.  FWIW, case
> sensitivity has been the default behavior since last May when version
> 0.13.0 was released.

After regenerating my wordlist db, I notice that bogofilter is now
doing bi-state instead of tri-state.  Not sure how relevant that is.