All: "Readable" version 0.7.0 is now available:
https://sourceforge.net/projects/readable/files/?source=navbar

If you want to experiment with the current draft of sweet-expressions,
this may be of interest.  It includes the draft implementation of
sweet-expressions, as well as some wrapper scripts so that you
can immediately try it out with guile (an implementation of Scheme).
It also includes a much-larger test suite.

It also includes the program "sweeten", a program to translate
traditional s-expressions into sweet-expressions.  The "sweeten"
program is itself written using sweet-expressions (see
file "src/sweeten.sscm" in the readable distribution),
which demonstrates that they're useful and shows how they can be used.

 --- David A. Wheeler