Building a jar that can report its version with `java -jar javaspec-0.4.0.jar --version`
Separating pluginManagement and plugins so the department of redundancy department may be satisfied
[Attaching sources](http://maven.apache.org/plugin-developers/cookbook/attach-source-javadoc-artifacts.html), which is
required for the maven central repository
Generating a -javadoc jar for use with the central repository