v0.4.0

Changelog:

• Breaking: Use mark-level orderby (not order) to convey query orderby criteria. Avoids conflict with Plot's order option for implicit stack transforms.
• Breaking: Rename channel window transform keys to orderby and partitionby (not order and partition) to more closely match SQL and improve consistency with Mosaic's SQL helpers and mark-level orderby criteria.
• Update highlight interactor to automatically add mark orderby when needed to ensure consistent data order. (#248)
• Bump dev dependencies.