- 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.