Strings
~~~~~~~

Larceny now provides Unicode strings with
http://www.r6rs.org/[R6RS]
semantics.

That means the string-downcase and string-upcase procedures
now perform Unicode-compatible case folding, which can result
in a string whose length is different from that of the original.

Larceny may still provide string-downcase! and string-upcase!
procedures, but they are deprecated.

