Ant-contrib.unkrig.de
This project was renamed to "Antology" to get rid of the constant confusion with the (related, but otherwise independent) "ant-contrib" project on SOURCEFORGE.
As a consequence, in all your ANT build scripts, you have to change
<taskdef resource="de/unkrig/antcontrib/ant.xml" classpath="path/to/de.unkrig.ant-contrib.jar" />
to
<taskdef resource="de/unkrig/antology/ant.xml" classpath="path/to/antology-x.y.z-jar-with-dependencies.jar" />
. That's all, folks!