Upgrade common-scala.
Rename packages to edu.knowitall.
Moved folders from edu/washington/cs/knowitall to edu/knowitall.
Fix warnings in core.
Cross build with 2.10.
Add signing plugin.
Add sonatype information.
Don't publish root project.
Prepare for release of 2.4.0.
Prepare for development of 2.4.1-SNAPSHOT.
Cleanup build.scala.