[racket-dev] Release Announcement for v5.3.4

At Mon, 22 Apr 2013 23:16:07 -0400, Ryan Culpepper wrote:
> mflatt:
>   - added file-truncate (48e05093)
>   - mach-o: handle some new load commands (a229f292)
>   - mach-o: code signing fixes (1744a787)
>   - scribble/latex-properties: add command-extras (17865bfa)
>   - ffi/com: improve handling of type-described (79266fcf)
>   - added scribble/book and scribble/report langs (09d4aa3d)
>   - add _size, _ssize, _ptrdiff, etc (d46411d3)
>   - add phaseless modules (899a3279)
>   - improve complexity of hash-iterate-{key-value} (7a8c2ff0)
>   - add 'so-mode to system-type (cdf0f6b9)
>   - add interactive to slideshow (454f4c3f)
>   - ffi/com repairs, including mysterx compat (6e40caa7)

I think these are all too minor to mention.

(Cross-phase persistent modules may be worth announcing in the future,
when they work better.)

> Michael Filonenko:
>   - extflonums (17b80926)
>   - extflounum unboxing (840fc9c6)

 * Extflonums, which are 80-bit floating-point numbers, are supported
   on some x86/x86_64 platforms --- including Windows, and including
   platforms where Racket is compiled to use SSE instructions for
   flonum arithmetic. Thanks to Michael Filonenko.