Refactoring core testpackage code into modules/core
Maven plugin skeleton
Initial implementation of fatjar goal for maven plugin, wrapping maven shade plugin
Adding invocation of really-executable-jar maven plugin to make generated JARs actually executable on linux environments, without needing to use 'java -jar ...'
Updating docs
Merge branch '#9' of github.com:rnorth/testpackage into rnorth-#9

Conflicts:
	build.gradle