Highcharts 6.2.0 已发布，更新如下：
Added support for multiple data labels on each single point.
Added draggable points plugin as module.
Added support for
pointPlacementin X range charts, affecting the category Y axis. Closed #7419.
bug 修复
Fixed #2366, improved polar chart yAxis
plotLinesresize and animation.Fixed #4281, added information about point in tooltip's
headerFormat.Fixed #6169.
cropShoulderwas inherited by column series, which set it to 0. Fixed by overriding to 1.Fixed #6370, category axis with breaks was rendered incorrectly.
Fixed #9049, issue with lines to culled points in boost.
Fixed #9052, conflict between settings boost.enabled and
seriesThreshold.Fixed #9058, error when running chart tests in jsdom.
Fixed #9088, updating a point in a pie chart threw errors when another slice was hovered.
Fixed #9091,
showCheckboxdidn't work with layout proximate.Fixed #9097,
chart.updateerror when removing axes and series.Fixed #9119, dataLabels sometimes overlapped stackLabels.
Fixed animation of grid lines when changing axis extremes. Follow tick marks.
