[plt-planet-announce] Updated PLaneT package: untyped/unlib.plt for 4.x

This announces the availability of an updated package from PLaneT:

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Name:            unlib.plt
Package version: 3.19
Owner:           untyped


Package Description
Helpful utilities from Untyped.
Release Notes

Changes and additions:
added enum-complement macro to enumeration.ss ; fixed bug related to misuse of define-match-expander in match.ss .
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Go to 

http://planet.plt-scheme.org/display.ss?package=unlib.plt&owner=untyped

for more information.