[plt-planet-announce] Updated PLaneT package: dvanhorn/fector.plt for 4.x

This announces the availability of an updated package from PLaneT:

-------
Name:            fector.plt
Package version: 1.1
Owner:           dvanhorn


Package Description
Persistent Functional Vectors.
Release Notes
Now with two flavors: thread-safe and disjoint or fast(er).
-------

Go to 

http://planet.racket-lang.org/display.ss?package=fector.plt&owner=dvanhorn

for more information.