[netcdf-java] announce: CDM version 4.2.26 stable release

Netcdf-Java / CDM is now at release version 4.2.26, and can be found at the usual place:

http://www.unidata.ucar.edu/software/netcdf-java/documentation.htm <http://www.unidata.ucar.edu/software/netcdf-java/documentation.htm>

This release has a number of important bug fixes and improvements. We recommend that you upgrade to it asap.

Except for bug fixes, 4.2 is now frozen, and further development will be for version 4.3.