Fixes

• Fixed #13811, Point.partialFill didn't override Series.partialFill.
• Fixed #14356, offline PDF export failed for larger datasets.
• Fixed #14352, wrong button text displayed when chart initialized with a table.
• Fixed #14349, first point being null broke the accessibility screen reader.
• Fixed #14366, error in boost module on older Windows installations.
• Fixed #14050, error when passing empty dataLabels array columnrange and related series.
• Fixed #14298, Chrome complained about touch events not being cancelable when calling preventDefault.
• Fixed #14310, addPlotBandOrLine didn't check if the axis was visible before rendering.
• Fixed #14278, first point was highlighted on long touch when the accessibility module was loaded.
• Fixed #13956, annotations had the wrong position for resized Y axis.
• Fixed #14230, chart.update failed to update time options in some cases.

Features

• Reorganized source file structure and naming.
• Added defer as animation parameter. This allows for granular deferring of series animation, labels etc.
• Added toggle feature for the data table in the export-data module.
• Added support for configuring sonification options in the chart configuration, as well as support for disabling individual series, configuring master volume, and inverted polarity mapping. Note that chart configuration options are still considered experimental and may change.
• Added new option, time.moment, allowing the moment.js library to be used without being available in the window context.

Fixes

• Fixes in Highcharts v8.2.0
  • Fixed #13694, threshold wasn't respected when low was defined.
  • Fixed #13553, exception on negative X values on logarithmic axis.
  • Fixed #13737, a regression causing chart zoom to conflict with the browser's drag-and-drop behaviour.
  • Fixed #13710, a regression causing errors on empty pie series.
  • Fixed #13726, img and br tags in data labels not being proper XHTML on SVG export.
  • Fixed #13538, softThreshold not working as expected when a threshold was set.
  • Fixed #10555, scrollablePlotArea not rendering correctly on FireFox.
  • Fixed #12959, #13937, drilldown did not work on treemap and sunburst series after update.
  • Fixed #13789, incorrect arearange path on polar chart when the connectEnds option was set to false.
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  • Fixed #13736, draggable annotations did not work on touch devices.
  • Fixed #13707, view table link should be a button.
  • Fixed #13864, better accessible legend item labels.
  • Fixed #13729, focus issues with shift+tab.
  • Fixed #13971, missing Series imports preventing some builds from the Download Builder to work.
  • Fixed #13532, a regression in 8.1.0 causing annotations of type "label", "circle" and "rectangle" not to be editable.
  • Fixed #13762, missing xAxis labels on a polar chart when the useHTML option was set to true.
  • Fixed #13846, data labels were initially hidden in some pie chart instances due to overlapping detection.
  • Fixed #12868, drag zoom was not working on multiple charts after scrolling.
  • Fixed #13785, wrong CSV output for data without defined y value.
  • Fixed #13771, polar chart tooltip was hidden when point value was equal to max.
  • Fixed #13570, updating chart and networkgraph series simultaneously threw errors.
  • Increased precision of sonification duration.