Breaking changes:

• Rename range transform to sequence transform.

Other changes:

• Add text mark limit, dir and ellipsis properties for truncation.
• Add config options for axis/legend labelLimit, titleLimit, etc.
• Update parser config defaults.
• Update transform definition schemas.
• Update Vega JSON schema.
• Fix mark definition key property support bug.
• Fix DataJoin mod tuple assignment bug.
• Fix parser operator order for non-faceted marks bug.