Maven

[awendland]

This migrates the project to the Maven build system.

• The project has a dependency on JUnit 4.8.1 for testing.
• The target java version is 1.8 and the minimal compatible version is 1.6 (due to @Override on interface methods).

Changes:

• .gitignore has been expanded to include Maven, various IDEs and various OSs in its exclusion
• The java src and test directories have been migrated to the Maven project structure
• the build/ directory, build.xml, and other NetBeans and Ant files have been removed

[aNNiMON]

Unfortunately, I have already added Gradle support to project. Now it can be built with Ant or Gradle.

[awendland]

Even better! Thanks for adding that, @aNNiMON