v0.6.1

Please see the 0.6.1 release notes for more!

• Add geo mark for rendering GeoJSON geometries.
• Add graticule and sphere convenience geo marks.
• Add top-level projection option for projecting geographic (and other) coordinate systems.
• Add auto curve to the line mark for projecting lines.
• Add mark.fx and mark.fy options for mark-level faceting.
• Fix the fx and fy scales to support the scale.transform and scale.percent options.
• Fix quantize scales to support the scale.unknown option.
• Fix initializer transforms to not drop the mark.sort option when used to sort a scale’s domain.
• Fix spurious warning about empty strings appearing to be numbers.
• Fix the mean and median reducers to return dates if the data is temporal.
• Fix the default height to adjust when margins are specified.
• Fix the position of the frame anchor when either the x or y scale is ordinal (band or point).
• Fix the dot mark to not render when a negative constant radius r is specified.
• Improve the error message when an invalid color scheme is specified.