Re: [plt-dev] Release Announcement for v4.2.1

On Jul 20, Robby Findler wrote:
> I think define-relation is new this time, in Redex...?

(Most of the text I'm including at this stage is coming from scanning
the commit messages.)

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                    http://barzilay.org/                   Maze is Life!
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