v5.8.1

• Fix rendering glitch with arc.cornerRadius.

v5.8.0

d3-force

• Add iterations argument to simulation.tick. Thanks, @vasturiano!
• Fix bug when initializing nodes with fixed positions. Thanks, @vasturiano!

d3-geo

• Fix projection where |longitude| > 180°.

d3-scale

• Add domain and range (or interpolator) convenience constructors for all scale types.
• Add default constructors for sequential and diverging scales.
• Add d3.tickFormat.
• Add d3.scaleSymlog.
• Add transformed sequential scales (e.g., d3.scaleSequentialLog).
• Add transformed diverging scales (e.g., d3.scaleDivergingLog).
• Add d3.scaleSequentialQuantile for p-quantiles.
• Add scale.unknown for all scale types.
• Allow unlimited band.paddingOuter and point.padding.
• For collapsed domains, use midpoint of domain or range rather than start.

d3-selection

• Add selection.join!
• Fix selection.order to enforce relative position, rather than exact siblings.
• Remove vendor fallback for element.matches in selection.filter and d3.matcher.

d3-shape

• Add d3.stackOrderAppearance. Thanks, @isaomatsunami!
• Fix d3.stackOrderInsideOut to use appearance (onset) rather than sum.
• Fix rendering glitch with rounded arcs.

d3-transition

• Add transition.end.
• Add cancel events to transition.on.
• Improve the performance of transition.style and transition.attr.
• Tween functions can now use this to refer to the current node.
• Fix removal of styles when the value passed to transition.style is null.
• Fix interpolation in transition.style and transition.attr in certain non-string cases.

v5.7.0

• Add d3.geoEqualEarth.
• Add d3.interpolateHue.
• Add d3.interpolateDiscrete.
• Fix upper histogram bin threshold in some cases.
• Fix axis domain rendering when the outer tick size is zero.

v5.6.0

• Add density.weight.
• Use currentColor instead of black for axes.

v5.5.0

• Add d3.scaleDiverging.
• Fix treatment of degenerate domains in d3.scaleSequential.

v5.4.0

• Add d3.interpolateSinebow.

v5.3.0

• Add ~ option to d3.format to trim insignificant zeros. Thanks, @vasturiano!
• Fix d3.formatSpecifier to not bake shorthand aliases.

v5.2.0

• Add color.hex.
• Add d3.piecewise.

v5.1.0

• Add d3.lch.
• Add d3.gray.
• Switch from D65 to D50 for Lab and HCL color spaces. Thanks, @danburzo!
• Fix Lab and HCL representation of achromatic colors.

v5.0.2

Replaced by 5.1.0.