3.0.0 Release Candidate 1

New Features and Enhancements

• Add filter for valid fields. (#4109)

• Add interpolate as one of the errorband properties. (#4065) -- Thanks @chanwutk

Bug fixes

• Make fill/stroke respect null (#4086)
• Make config.timeFormat affect only text, header, and labels but not axis
• Fix broken vl2vg command due to new dependencies

Internal Improvements

• Merge identical transforms at forks and make dataflow more efficient. (#4029) -- Thanks @invokesus
• Calculate dependent fields for expressions. (#4099)
• Use new schema generator with better support for tuples.
• Typescript 3 (#4093)

Examples / Docs

• Extend docs about UTC (#4094)

v3.0.0-rc0...v3.0.0-rc1