[plt-scheme] PLT Scheme versions

It would be nice if somewhere on download.plt-scheme.org were a list  
of versions, with release dates and summaries of the changes.  I can  
see the changes in the $PLTDIR/doc/release-notes directory, but (a)  
this doesn't include dates, and (b) this requires downloading and  
unzipping the package before I can see the version history.

My Computing Center is always reluctant to install anything less than  
a month or two old, and they do lab installations only twice a year,  
so my classes are currently running on 4.1.3.

Stephen Bloch
sbloch at adelphi.edu