🆕 Enhancements
- Add a flag to group rows together (rangeBarGroupRows) in a multi-series timeline chart - thanks, @kgram007
- New event - beforeResetZoom
- dateformatter option added in xaxis.labels.formatter to allow the user to format dates when using xaxis.labels.formatter
🐞 Bug Fixes
- Corrected shade color in heatmap - fixes #1916
- X-axis title color - fixes #1922
- Treemap drop shadow; check the series length in theme - fixes #1935
- Prevent legend to take up all space - fixes #1835
- Stacked data labels bug fix - fixes #1951
Misc changes
- Add Simplified Chinese (zh-cn) locale. - Thanks, @f0rb1d