v2.0.0-alpha.2

Syntax

Mark

• Rename "errorBar" => "error-bar" for consistency with other properties.
• Separate CompositeMark from (primitive) Mark …
  • Provide API for registering new type of composite marks with a normalizer method

Encoding

• Add stack to x and y encoding channel
• Add format for text encoding channel + remove config.text.format

Scale / Axis / Legend

• Add new axis properties: labelPadding, position, titlePadding, maxExtent, minExtent
• Add new legend properties: entryPadding, tickCount, zindex, titlePadding
• Add new scale properties: interpolate

Other Config

• Rename config.mark.stacked toconfig.stack
• Add scale range config to match Vega config
• Remove config.text.applyColorToBackground, which adds background to text mark.

Composition

• Make layer operator singular (layer), not plural (layers) -- to be consistent with facet, repeat, and concat.

Output

• Add mark role to the output so that we can leverage Vega mark's role config for Vega-Lite marks that are not Vega marks (bar, tick, point, circle, square)

Internal

• Distinguish between Extended*Spec and *Spec, which both implement Generic*Spec, and between Mark and CompositeMark