POM: remove unused dependencies
Organize imports
Preemptively bump to the new parent POM version

Unfortunately, we have to configure the enforcer plugin differently
because of the many conflicts the fat Batik artifact has with Java6' and
other dependencies' XML classes.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bump to next development cycle

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
POM: tweak repositories comment
POM: organize dependencies
POM: tidy up order of configuration blocks

Accomplished using:

    mvn tidy:pom
POM: tweak how exclusions are structured

This makes them more consistent with how I did it in other Fiji
projects. But of course, we eventually want to deal with these
issues upstream.
Split <project> element, for readability