[plt-dev] Release Announcement for v4.2.4

I don't think that normalizing the results of procedure-arity deserves
a mention. Similarly, the keybindings thing is probably too low-level.

I think that the image stuff deserves a mention:

* the 2htdp/image continues to grow. In this release, it is now
supported by 2htdp/universe, equality changed to be based on how the
images are drawn, cropping and curves were added, and support for more
kinds of pens were added.

* Added a porting guide that explains how to turn htdp/world programs
into 2htdp/universe and 2htdp/image programs

Robby

On Sun, Jan 24, 2010 at 6:26 PM, Eli Barzilay <eli at barzilay.org> wrote:
> Possible release announcement items below.  Please mail me new items
> and edits or deletions.
> ----------------------------------------------------------------------
>
> * [Matthew] scheme/fixnum, scheme/flonum, flvectors
>
> * [Matthew] Unsafe stuff (make it's ready to describe now?)
>
> * [Stevie] new `this%'
>
> * [Matthias] `error' in teaching languages?  universe/world changes?
>  `random', `gensym', `current-millisecond', `sleep', `assoc',
>  `with-i/o-from-to' added?
>
> * [John] New `infinite-generator'`sequence->generator'
>  `sequence->repeated-generator'?
>
> * [Carl] contract changes?  (r17105)
>
> * [Carl] New $PLTADDONDIR, `--addon'/`-A' flags?
>
> * [Eli] Much improved `sort' speed.
>
> * [Robby] User-defined keybindings now override menu items (r17135)
>
> * [Robby] New image work?
>
> * [Sam] Typed Scheme changes? (r17281, r17284, r17519, r17520,
>  r17551, r17567, r17568, r17575, r17609, r17612, r17653, r17654,
>  r17657, r17660)
>
> * [Matthew/Eli] `#:save-errno'?
>
> * [Robby] normalized the results of `procedure-arity'?
>
> ----------------------------------------------------------------------
>
> --
>          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
>                    http://barzilay.org/                   Maze is Life!
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