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* Bug fixes to Jupyter Labs rendering.
* Bug fix for timestamp serialization of timezone-naive ``datetime`` objects.
* Bug fix: typo in Plot Bands serialization.
* Added null support to color validation.
* Bug fix in ``style`` deserialization.
* Bug fix in ``CartesianData.from_array()``.
* Fixed ``NaN`` handling in ``.load_from_pandas()``.
* Fixed JSON deserialization in ``.from_array()``.
* Added support for stylesheet links in Jupyter Labs context.
* Several bug fixes in JS literal serialization.
* Major improvements to JavaScript module inclusion.
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