v6.6.0

• Add d3.fcumsum. Thanks, @Fil!
• Add d3.curveBumpX and d3.curveBumpY. Thanks, @Fil!
• Add axis.offset.
• Only offset the axis by 0.5px on low-resolution devices (devicePixelRatio ≤ 1).
• Update dependencies.

v6.5.0

• Add d3.groupSort.
• Allow d3.sort to take multiple accessors.

v6.4.0

• Add d3.InternMap.
• Add d3.InternSet.
• Change d3.group, d3.rollup et al. to use InternMap.

v6.3.1

• Fix last bin with d3.bin when the values are not numbers.
• Fix last bin with d3.bin when the tick increment is fractional.

v6.3.0

• d3.sort now may accept an accessor.
• Fix zero-width last bin with d3.bin.

v6.2.0

• Add d3.nice.
• Add d3.every.
• Add d3.some.
• Add d3.filter.
• Add d3.map.
• Add d3.reduce.
• Add d3.reverse.
• Add d3.sort.
• Add d3.difference.
• Add d3.disjoint.
• Add d3.intersection.
• Add d3.superset.
• Add d3.subset.
• Add d3.union.
• Fix d3.bin to nice the domain by default, ensuring uniform bin widths.
• Fix d3.scaleQuantile performance regression. Thanks @ilijapuaca!

v6.1.1

• Fix imprecision with bin.thresholds(count).

v6.1.0

• Add d3.shuffler.
• Add d3.bisectCenter.
• Fix off-by-one with bisector.center.
• Accept any integer seed with d3.randomLcg.

v6.0.0

• Adopt ES2015, including support for iterables and collections (Map and Set).
• Remove d3.event; selection.on now passes events directly to listeners.
• Remove d3.mouse, d3.touch, d3.touches, d3.clientPoint; add d3.pointer and d3.pointers.
• Remove d3.nest; add d3.group and d3.rollup.
• Remove d3-collection; see d3-array.
• Remove d3-voronoi; add d3-delaunay.
• Remove support for Bower.

For more on what’s new, see CHANGES.

To upgrade from D3 5.x, see the migration guide.

v5.16.0

• Add projection.reflectX.
• Add projection.reflectY.
• Fix achromatic hexadecimal colors.