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* Fixed bug in deserialization of ``options.plot_options.base.MapBaseOptions.join_by``.
* Fixed Heatmap and Highcharts Maps JavaScript import conflict.
* Fixed bug in utility_classes.projections.ProjectionOptions.custom property.
* Fixed serialization bugs in options.series.data.map_data.MapData.
* Added ``properties`` support to data point classes in ``options.series.data.geometric``.
* Updated Jupyter display logic to align with **Highcharts Core for Python** signatures.
* Added demos to documentation.
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