• Add d3.pathRound.
• Add configurable precision when generating path data via path.digits.
• Add likewise shape.digits method to d3.arc, d3.area, d3.line, d3.link, and d3.symbol.
• Improve the performance of d3.geoPath’s string concatenation.
• Fix arc rendering for small arcs with rounded corners.
• Fix BumpRadial implementation to support multiple points.
• Fix projection when lambda is outside the range ±3π.
• Rename d3.symbolX to d3.symbolTimes; d3.symbolX is now deprecated.