This version brings a significant change to dystill. Namely, it breaks the unofficial association between dystill and Postfix that has existed since I first wrote it last year. I did this for a couple of reasons:
To hopefully increase adoption. Dystill now (really!) stands independent of any MTA. Use it with whatever you want (sendmail, Qmail, etc). You actually always could, but you'd have to ape some Postfix tables. You don't have to do that anymore.
To make it easier to write web-based front-ends to dystill's MySQL database, enabling users to add rules.
This was done by adding an "email" column to the filters table, updating that field with the recipient address, and dropping the old userid field. Also, a "maildirpath" config variable was added to the config, specifying where the maildirs live.
There was also a minor bugfix I came across the other day where certain uncommon (but legal) characters could result in unreadable maildirs.