Release History 

Release 1.7.0 

NOTE: This release skips the v.1.6 number to maintain alignment with the other Highcharts for Python libraries.

ENHANCEMENT: Align the API to Highcharts Stock (JS) v.11.4 (#62). In particular, this includes:
- Updated requirements to depend on Highcharts Stock for Python v.1.7.
- Added .element_type support to the Stock Tools GUI.
- Added Accessibility.high_contrast_mode support.
- Added OrganizationOptions.hanging_side support.
- Added SankeyOptions.node_distance support.
- Added TreegraphOptions.node_distance support.
- Adjusted diagram (ArcDiagramOptions, TreegraphOptions, DependencyWheelOptions, and SankeyOptions) .node_width support and documentation.
- Added NodeOptions.height support.
ENHANCEMENT: Align the API to Highcharts (JS) v.11.3 (#47). In particular, this includes:
- Updated requirements to depend on Highcharts Stock for Python v.1.6.
- Added ChartOptions.axis_layout_runs property.
- Added ColorAxis.height property.
- Added ColorAxis.width property.
- Added Data.column_types property.
- Added Exporting.fetch_options property.
- Implemented support for verbose axis date-time unit labelling configuration (see: DateTimeLabelFormats).
BUGFIX: Fixed validation error in GanttSeries.from_pandas() (#46).
BUGFIX: Fixed missing functionality for RangeSelectorButton.type property.
BUGFIX: Fixed missing FlagData.text property (courtesy of @szemek )
DOCUMENTATION: Fixed typos in Getting Started tutorial.

ENHANCEMENT: Align the API to Highcharts (JS) v.11.2 (#127). In particular, this includes:
- Added .radius support to Connectors.
- Added Navigator .accessibility support.
- Added .class_name to Stock Tools definitions.
- Added reversal support to Fibonacci Stock Tools.
- Added AxisEvents.point_break_out property.
- Added .node_alignment property to SankeyOptions and SankeySeries.
- Added .link_color_mode property to SankeyOptions and SankeySeries.
- Added .inactive_other_points property to multiple series types.
- Added .grouping property to Lollipop series type.
- Added .low_marker property Area Range and Dumbell series types.
- Added .show_export_in_progress and .export_in_progress support.
- Added .drag annotation event support.
BUGFIX: Fixed missing .levels support in TreegraphOptions and TreegraphSeries.

MAJOR performance gains in the .to_js_literal() method. Implementation seems to improve performance by 50 - 90%.
SIGNIFICANT performance gains in the .to_json() method. Implementation seems to improve performance by 30 - 90%.
ENHANCEMENT: Significantly simplified use of the .from_pandas() method to support:
- creation of multiple series from one DataFrame in one method call
- creation of series without needing to specify a full property map
- support for creating series by DataFrame row, rather than just by DataFrame column
ENHANCEMENT: Added the .from_pandas_in_rows() method to support creation of charts and series from simple two-dimensional DataFrames laid out in rows.
ENHANCEMENT: Added one-shot chart creation and rendering from Series objects.
ENHANCEMENT: Added one-shot chart creation using series and data/series_type keywords.
ENHANCEMENT: Added .convert_to() convenience method to Series objects.
ENHANCEMENT: Added CallbackFunction.from_python() method which converts a Python function to its JavaScript equivalent using generative AI, with support for both OpenAI and Anthropic.
BUGFIX: Fixed instability issues in Jupyter Notebooks, both when operating as a Notebook (outside of Jupyter Lab) and when saved to a static HTML file.

ENHANCEMENT: Modified the way that data points are serialized to JavaScript literal objects. Now, they are serialized to a JavaScript array if their configured properties are those that Highcharts (JS) supports in JavaScript array notation. Otherwise, the code falls back to serialize the data point as a JavaScript object literal. This change is intended to improve performance and reduce the size of the serialized data. (#32)
ENHANCEMENT: Added __repr__() method for Highcharts Core for Python classes.
ENHANCEMENT: Added __str__() method with special handling for difficult-to-read classes.
ENHANCEMENT: Added Chart.get_script_tags() to retrieve Javascript <script> tags.
ENHANCEMENT: Added utility_functions.to_snake_case() function.
BUGFIX: Fixed incorrect serialization of datetime and Pandas Timestamp objects in .to_dict() and .to_json().
BUGFIX: Fixed incorrect serialization of EnforcedNull in .to_dict() and .to_json().

BUGFIX: Fixed refernece bug in serialization of GanttData instances with timezone-naive datetime instances in start and ``end.

BUGFIX: Fixed support for serialization of GanttData instances with timezone-naive datetime instances in start and ``end. Closes #29.
DOCS: Fixed broken links in documentation to options.series.gantt.GanttSeries and options.series.data.gantt.GanttData. Closes #28.

BUGFIX: Fixed incorrect datetime serialization to SECONDS from Unix epoch. Now serializing to JS-compatible MILLISECONDS from Unix epoch.

ENHANCEMENT: Align the API to Highcharts (JS) v.11.1 (#22). In particular, this includes:
- Changes inherited from Highcharts Core for Python v.1.2.0. See here.
ENHANCEMENT: Added support for the inclusion of scripts based on features used in the chart (#7).
ENHANCEMENT: Added dict support to .style property on labels and titles.
DOCS: Various documentation updates and fixes.
DEPENDENCY: Bumped requests version for security patch.

Align the API to Highcharts (JS) v.11. In particular, this includes:
- Changes inherited from Highcharts Core for Python v.1.1.0. See here.
FIXED: Fixed missing TreegraphOptions / TreegraphSeries series type.

Added documentation of “hard” dependencies to the README.
Fixed broken links in documentation to options.plot_options.heatmap.HeatmapOptions and options.plot_options.heatmap.TilemapOptions.

First official release!
Fixed over-eager logical filtering on options.series.data.GanttData instantiation.

Added demos to documentation.
Fixed options.series.gantt.GanttSeries documentation.
Aligned Jupyter display to new Highcharts Core signature.
Added datetime.date (as opposed to datetime.datetime support for GanttSeries.start and GanttSeries.end.

Added CSS overrides to documentation for better accessibility.
Added jQuery to documentation to address issue in Sphinx 6.0 and Sphinx RTD Theme.

Fixed unneeded python-dotenv import.
Suppressed Asana irrelevant deprecation warnings.
Suppressed Asana custom dict population (possibly revisit in a later version).
Fixed JavaScript module inclusion logic in Jupyter context.