amcharts/amcharts4 4.9.17 on GitHub

[4.9.17] - 2020-04-20

Global option am4core.options.nonce added. If set, amCharts will use this as a nonce-parameter for all dynamically created stylesheets, so it can be addressed in Content-Security-Policy headers.
New Popup property: dynamicResize. If set to true (default) and contents contains unloaded images it will resize itself when those finish loading.
gradientUnits added to LinearGradient. If you're setting gradient on a perfectly straight line, set it to userSpaceOnUse.
filterUnits added to Filter. If you're setting gradient on a perfectly straight line, set it to userSpaceOnUse.
startLocation and endLocation added to CategoryAxisBreak. Can use to indicate where exactly within category break should start and end.

Popup now will size itself to accommodate images inside it as they are being loaded. To disable, set Popup's dynamicResize = false. Also make sure you enable maxWidth/maxHeight in your CSS to avoid unreasonably large popups for unsized images.

Week number in date format ("ww") was not accounting for daylight saving.
Pressing ENTER on a focused Legend item will no longer toggle related series if legend's item containers are sett to be not togglable.
Exporting to SVG no longer breaks if chart contains foreignObject elements with SVG's in them.
Line smoothing (tensionX / tensionY) now drops out duplicate points to avoid weird loops on overlapping data items.
Chart was zooming incorrectly, when data was added directly to stacked series and one of the series was hidden.
Some performance issues with XYCursor and a lot of series fixed.
LinearGradient fill was not working on LineSeries under EDGE.