Added Queryable.reindex
Added queryable ManyIntegersObject (+generator)
When test name is set to empty, results are not recorded.
Stages should usually allow some slaves to report just successful ack (in case that the stage is not ran on all slaves).
* Utils.cast replaced by Projections.instancesOf or Projections.castProject
Added amend-test option for StressTestStage and IterateStage
Added `tail -f` termination to dist.sh