EXT:highcharts allows you to use HighCharts in your extensions.
The extension version only matches the HighCharts library version, it doesn't mean anything else.
You can load the library in your Fluid template.
<highcharts:js />
You can load some specific plugin, like 3d or more.
<highcharts:plugin plugin="3d" />
Or some specific module.
<highcharts:module module="..." />
You can also load your own libraries.
<highcharts:js src="..." />
<highcharts:plugin plugin="..." src="..." />
<highcharts:module module="..." src="... />
For more options please refer to <f:asset.script>.
To use other HighCharts source, you can register it in ext_localconf.php or AdditionalConfiguration.php.
\Dagou\Highcharts\Utility\ExtensionUtility::registerSource(\Dagou\Highcharts\Source\HighCharts::class);
You may want to disable the other source and use the local one instead in some cases, for example saving page as PDF by WKHtmlToPdf.
<highcharts:js disableSource="true" />
<highcharts:plugin plugin="..." disableSource="true" />
<highcharts:module module="..." disableSource="true" />