[racket-dev] Release Announcement for v5.2.1, second draft

>> * Plots look nicer, render up to 4 times faster, and are more
>>     correct at very small and very large scales. New features
>>     include customizable dual axis ticks and transforms (e.g. log
>>     axes, date and currency ticks, axis interval collapse and
>>     stretch), stacked histograms, and 3D vector fields. The legacy
>>     `fit' function and libfit have been removed.
>
> "up to 4 times faster" sounds fishy -- I think that just "faster"
> sounds better.  Also, should move up.

Probably gives the wrong impression anyway. I just tested, and found 
that most 2D plots are a bit slower. Bah. The 3D plots are generally 
1.5x faster. (FWIW, the `points' plots get 4x.)

So it's a wash. Just take that part out, leaving the first sentence as

     Plots look nicer and are more correct at very small and very large
     scales.

Neil T