Highcharts 6.1.4 已发布，更新如下：
Better polyfill for
forEachin oldIE. See #8865.
Bug fixes
Fixed #2165, legend.labelFormatter was not called when series' visiblity changed.
Fixed #3495, export menu click was wrongly triggering chart's click event.
Fixed #3739, changed rounding method to Math.foor for milliseconds dateFormat to match other date and time formats.
Fixed #5009, performance problem with long text strings and word-wrap.
Fixed #6405, Highcharts crashed when using category axis, small
labels.stepoption and a large data range. Re-introduced error 19.Fixed #7484,
followTouchMovedidn't work properly on column series on mobile.Fixed #7815, data labels were visible even when points were hidden.
Fixed #8652, replace max/min safe integer with max/min value in wordcloud to support IE11.
Fixed #8865, wrong links in sankey chart if the columns didn't start from 0.
Fixed #8874 and #8346,
Highcharts.indexOfPolyfillwasn't supporting all required arguments.Fixed #8901, bubble chart calculated wrong extremes when either xAxis.min or xAxis.max was set.
Fixed #8933,
minPointLengthsquished all ranges to minimum length when xAxis was reversed.Fixed #8960, animation didn't run on
Series.update()with new data.Fixed #8972, improved a way of assigning data to specific bins in histograms.
Fixed #8994, a regression causing cropped legend items to become long after hover when useHTML was true. Regression since #8809.
Fixed #8995, added support for duplicated x values for Series.setData.
Fixed issue with tooltip header placement when scrollable plot area was activated.
