[thredds] Announce TDS version 4.2.9

[John Caron <caron@xxxxxxxxxxxxxxxx>]

A new release, TDS 4.2.9, is now available at:

http://www.unidata.ucar.edu/projects/THREDDS/tech/TDS.html
ftp://ftp.unidata.ucar.edu/pub/thredds/4.2/thredds.war

This version should be used for all production servers.
 
For details, see the change log:

ftp://ftp.unidata.ucar.edu/pub/thredds/4.2/CHANGES.txt

John and Ethan