[racket] Inconsistency of `in-range` and numerical issues

Alexander D. Knauth writes:

 > > 1) read-decimal-as-inexact could be #f by default, preferring exactness over efficiency by default.
 > 
 > I just made a meta-language that does this:
 > https://github.com/AlexKnauth/exact-decimal-lang
 > The teaching languages also do this, but this can be used with any language.

That looks nice, thanks! I have found an immediate use for this in a
Racket file that defines a big database of numerical parameters. I
could remove all the #e and make the data much more readable.

Konrad.