Refactoring PriorityJobQueue
Fixing tests
Fixes #10: futures are now retrieved asynchronously too.
Fixed test
[maven-release-plugin] prepare release JavaZinc-1.2.0
[maven-release-plugin] prepare for next development iteration
Reordering assertions
PriorityJobQueue: converted executor services to ListeningExecutorService, and simplified waitForFuture by using Futures.dereference()
Merge pull request #11 from mindsnacks/feature/fix-waiting-for-futures

Fixes #10: futures are now retrieved asynchronously too.