Moves team autostart to Factory.addTeam (closes #14)
Moves task cleanup logic from worker to task
Adds further overloading of Factory.execute
Bug fix in Dispatcher (ignore instead of ignoreTask)
Wraps Task.finalize function in order to prep for failure retries
Adds task retry and example to close #8
Merge pull request #15 from brandoncarl/feature/team-race

Fixes team race conditions and adds Task retry