4.3

• @MohamedMandouh implemented distributed sorting: BatchStage.sort().
• @guenter-hesse added a high-throughput source with precisely controlled
  timing, to be used to benchmark Jet's throughput and latency.
• We added the ability for Jet to suspend an unbounded, fault-tolerant job
  when it fails due to an exception in the pipeline code. This allows you
  to diagnose the problem, remove its cause, and resume the pipeline without
  data loss.
• We have improved the consistency of reconnect behaviour across CDC sources and
  introduced a uniform API to configure the reconnect strategy.
• We improved the behavior of streaming pipelines based on ingestion time: a
  low event rate in any partition of the source used to stall the progress,
  now the watermark advances even without events.
• We moved the Pipeline to DAG transformation from the client to the server,
  in preparation for the upcoming feature of preventing event reordering in the
  pipeline.