Per-app exponential back-off for failing jobs
Added tests for new RateLimiter
Added logging output for task launch delay changes
Added task launch params to AppDefinition protobuf
Escalate task launch delay on unhealthy task death
Avoid identifier shadow in MarathonSchedulerDriver
Cleanup in TaskQueue.list
Use a thread-safe backing collection in TaskQueue
Standardize on implicit DSL for durations
Refactored MarathonScheduler.resourceOffers
Do not increase launch delay on TASK_LAUNCH
Merge pull request #386 from mesosphere/backoff

Exponential Task Launch Back-off (per-app)