Issue #150 - Change default concurrent flow execution to Run Concurrently.
Issue #150 - Correct help text for Run Concurrently option.
Merge pull request #151 from davidzchen/default-concurrent-options

Restore Run Concurrently as default flow concurrency option
Issue #153 - Create jars in dist.jars.dir instead of source tree root.
Merge pull request #154 from davidzchen/build-ivy

Create jars in dist.jars.dir instead of source tree root.