[plt-scheme] scaling and rotating images using image.ss

> Anyway, I'm glad to see this getting worked on.  I think one of the things
> that Scratch got right is that it provides simple image transformations,
> which turn out to be very useful in constructing simple-yet-compelling
> games.  I think having more of this stuff for drscheme will make it
> considerably more compelling for the younguns.

Yaron -- many of these things (and the set is growing) are now built
into browsers.  Our Moby compiler, which you saw last week, leverages
this.  The next challenge is to make Web deployment easy and
effective, which is another process unto itself.

Shriram