add timeStamp (never moved or compressed) in addition to scheduledStartTime (moved and compressed) and change dependencyTime (never moved or compressed) <-- easy process of maintaining GCT
modify Client to initialize GCT to lowest timeStamp in workload <-- computed during "limit" computation, but could be done in better way
update all tests and most classes (Stats Calc and Workload Validator need more work) to work with new design