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  • Add support for DECIMAL type.
  • Add support for window functions.
  • Add support for converting Velox plan fragments to and from Substrait representation.
  • Make it easier to build Velox on a variety of platforms.
  • Improve reliability by setting up performance testing for each PR.
  • Make it easier to debug failures, crashes and incorrect results.
  • Introduce simple aggregate function API for better authoring experience.
  • Expand test coverage for vectors and expression evaluation.