v0.2.5

Please see the 0.2.5 release notes for more!

• Add plot.scale(name) for exposing a scale used by a plot.
• Add scale.unknown option for control over unexpected, undefined, or invalid values.
• Add support for piecewise (or “polylinear”) scales.
• Improve “reversed” scale detection by comparing the natural order of the domain and range.
• The scale.range option now be used to produce a slice of a continuous color scheme or interpolator.
• Fix ordinal color schemes when the natural scheme size is different than the desired scheme size.
• Fix cyclical color schemes for ordinal scales; don’t repeat the first color as the last.
• The interval option for rect and bar now supports the default identity accessor for shorthand.
• The interval option is now ignored if the corresponding input channel (x or y) is missing, instead of erroring.
• Plot’s default rounding for band and point scales is now disabled if it would introduce more than 30px of empty space.
• The scale.percent and scale.transform options are now supported on all scales, including diverging scales.
• The center and wiggle stack offsets now center across facets to facilitate comparison.
• Plot’s internal string coercion now uses object.toString instead of object.valueOf.
• Many more tests!