The Guile core distribution:

Mikael Djurfeldt contributed core support for GOOPS, a CLOS-like object
    system for Guile, a generalized set! syntax, and a new random number
    generator.
Greg Badros contributes patches to use the new SMOB interface.
Gary Houston contributed a more efficient and portable implementation of
    I/O ports, and hacked on (ice-9 expect).
Michael Livshin implemented Dybvig's Guardians.
Roland Orre contributed list and vector sorting functions.
Russ McManus contributed a command-line argument parser (ice-9 getopt-long).
Ken Raeburn contributed patches to make Guile use `const' in some
    appropriate places.
Greg Harvey made sure I didn't lose any patches, and made readline
    highlight matching parenthesis.

Bug reports and fixes from:

Greg Badros, Etienne Bernard, John Bley, Brad Bowman, Frank Cieslok,
Karl Eichwalder, Mark Elbrecht, Jay Glascoe, Ian Grant, Eric Hanchrow,
Greg Harvey, Dirk Herrmann, Johannes Hjorth, Charbel Jacquin, David
Kaelbling, Lorentey Karoly, Valdis Kletnieks, Brad Knotwell, Michael
Livshin, David Lutterkort, Christian Lynbech, Russ McManus, Eric
Moore, Nicolas Neuss, Thien-Thi Nguyen, James Dean Palmer, Richard
Polton, Ken Raeburn, Mikael Ståldal, Telford Tendys, Jon Trowbridge,
Bernard Urban, Sebastien Villemot, and Jim Wilson

Also, thanks to:
- Craig Brozefsky, for his work on the Guile mailing list web archives
- Pat Eyler, for his continuing work on the Guile web pages