[Lucene-java Wiki] Update of "ReleaseNote42" by RobertMuir

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The "ReleaseNote42" page has been changed by RobertMuir:
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placeholder release notes

New page:
{{{
January 2013, Apache Lucene™ 4.2 available
The Lucene PMC is pleased to announce the release of Apache Lucene 4.2

Apache Lucene is a high-performance, full-featured text search engine
library written entirely in Java. It is a technology suitable for nearly
any application that requires full-text search, especially cross-platform.

This release contains numerous bug fixes, optimizations, and
improvements, some of which are highlighted below. The release
is available for immediate download at:
   http://lucene.apache.org/core/mirrors-core-latest-redir.html

See the CHANGES.txt file included with the release for a full list of
details.

Lucene 4.2 Release Highlights:

 * Lucene 4.2 has a new default codec (Lucene42Codec) with a more efficent
   docvalues format (sorted bytes in FST, less addressing overhead, improved
   numeric compression) and LZ4-compressed term vectors.

 * Significant refactoring and performance enhancements to the faceting module.
   Faceting uses docvalues instead of payloads to store ordinals and supports
   "drill sideways".

 * An additional docvalues type (SORTED_SET) was added that supports multiple
   values.

 * The FST package supports FSTs over 2GB in size.

 * Several bugfixes and optimizations since the 4.1 release.

 * TODO: please add more and reword the above.

Please read CHANGES.txt for a full list of new features.

Please report any feedback to the mailing lists
(http://lucene.apache.org/core/discussion.html)

Note: The Apache Software Foundation uses an extensive mirroring network
for distributing releases.  It is possible that the mirror you are using
may not have replicated the release yet.  If that is the case, please
try another mirror.  This also goes for Maven access.
}}}