4.4

• @hhromic improved the naming of source and sink stages across different
  connectors, bringing them all in line with the same convention xSource
  / xSink
• @TomaszGaweda added the pipeline.isEmpty() method that tells whether
  it contains any stage
• SQL Beta: submit jobs to Jet from the command-line SQL shell.
• Unified API to create sources and sinks from file-like resources: local
  filesystem, Amazon S3, Azure Blob Storage and Data Lake Storage, Google
  Cloud Storage
• Amazon Kinesis connector
• Prevent event reordering: by default Jet reorders data for performance,
  now you can disable this to get strict event order where you need it.
• @TomaszGaweda added the jet.imdg.version.mismatch.check.disabled
  config property that disables the enforcement of the exact IMDG
  dependency version. This allows adding IMDG quick fixes to the existing
  Jet release.
• New packaging: download either the full package with all the extensions
  enabled, or the minimal package and separately download the extensions
  you want.
• Improved the behavior of jet submit: now it waits for the job to
  start and prints a message about it.
• Improved the error message when using a Python function but Python
  is not installed.
• Improved the performance of the Kafka source by fine-tuning some
  timeouts.