v2.3.3

• Greatly improve the performance of d3.median. Thanks, @Fil and @jheer!

v2.3.2

• Avoid an array.sort bug in Safari. #123
• Fix bin thresholds to ignore NaN input.

v2.3.1

• Fix d3.count to ignore non-number input.

v2.3.0

• Add d3.greatest.
• Add d3.greatestIndex.
• Add d3.quantileSorted.
• Change d3.quantile to accept iterables and non-sorted inputs.

v2.2.0

• Add d3.groups.
• Add d3.rollups.
• Allow d3.least and d3.leastIndex to accept accessors.

v2.1.0

• Add d3.bin.
• Add d3.count. Thanks, @Fil!
• Add d3.minIndex.
• Add d3.maxIndex.
• Add d3.least.
• Add d3.leastIndex.
• Deprecate d3.scan; use d3.leastIndex instead.
• Deprecate d3.histogram; use d3.bin instead.
• Fix d3.permute to accept an iterable.
• Fix internal ES imports.

v2.0.3

• Fix histogram(iterable).

v2.0.2

• Fix an infinite loop in d3.cross. Thanks, @jviide!

v2.0.1

• Optimize and fix iteration in d3.cross. Thanks, @jviide!

v2.0.0

See https://observablehq.com/@d3/d3-array-2-0 for details.

• Add d3.quickselect.
• Add d3.group.
• Add d3.rollup.
• Rewrite d3.median to use quickselect.
• Accept iterables (not just arrays) where relevant.
• Allow more than two iterables for d3.cross.

Note: this release adopts ES2015 language features such as for-of and drops support for older browsers, including IE. If you need to support pre-ES2015 environments, you should stick with d3-array 1.x or use a transpiler.