PDP++ v. 3.1

["Randall C. O'Reilly" <oreilly@grey.colorado.edu>]

PDP++ version 3.1 is now available.

This is primarily a bug fix release -- see the ChangeLog for details
(there were lots of them).  A few significant bugs were fixed with
leabra++, including fixing a problem that resulted in the accumulation
of roundoff errors in the weight values, to the point that it could
affect training results on some especially sensitive models (esp those
using shared weights).  Also, all new types defined in a css script
(e.g., new classes, enums, etc) are now local to a given script scope,
instead of being globally shared among all scripts, as was the case
previously.  This prevents numerous unintentional conflicts between
scripts, and sharing of types across scripts is such a tenuous and bad
idea that it was never really used anyway.

The Mac OS-X package will be avail in the next few days.

				- Randy