Holoviews

**February 15, 2022**

This release contains a small number of important bug fixes as well as
fixes required for Python 3.9 and 3.10 support. Many thanks to Hoxbro,
maximlt, jlstevens, jbednar, and philippjfr.

Bug fixes:

- Fixed xarray validation for aliased coordinate
([5169](https://github.com/holoviz/holoviews/pull/5169))
- Fixed xaxis/yaxis options with Matplotlib
([5200](https://github.com/holoviz/holoviews/pull/5200))
- Fixed nested widgets by handling list or tuple values in
`resolve_dependent_value` utility
([5184](https://github.com/holoviz/holoviews/pull/5184))
- Fixed issue handling multiple widgets without names
([5185](https://github.com/holoviz/holoviews/pull/5185))
- Fix overlay of two-level categorical plots and HLine
([5203](https://github.com/holoviz/holoviews/pull/5203))
- Added support for Ibis > 2.0
([5204](https://github.com/holoviz/holoviews/pull/5204))
- Allow lower dimensional views on arbitrary dimensioned elements
([5208](https://github.com/holoviz/holoviews/pull/5208))
- Fix escaping of HTML on Div element
([5209](https://github.com/holoviz/holoviews/pull/5209))
- Miscellaneous fixes to unit tests, including cudf test fixes as well
as addition of Python 3.9 and 3.10 to the test matrix
([5166](https://github.com/holoviz/holoviews/pull/5166),
[5199](https://github.com/holoviz/holoviews/pull/5199),
[5201](https://github.com/holoviz/holoviews/pull/5201),
[5206](https://github.com/holoviz/holoviews/pull/5206))

**December 16, 2021**

This release contains a small number of important bug fixes. Many thanks
to douglas-raillard-arm, jenssss, w31t1, Hoxbro, martinfleis, maximlt,
jlstevens, jbednar, and philippjfr.

Bug fixes:

- Support xyzservices.TileProvider as hv.Tiles input
([5062](https://github.com/holoviz/holoviews/pull/5062))
- Allow reversed layout/overlay binary operators for `+` and `*` to be used with custom objects
([5073](https://github.com/holoviz/holoviews/pull/5073))
- Fix internal numpy.round usage
([5095](https://github.com/holoviz/holoviews/pull/5095))
- Remove dependency on recent Panel release by importing bokeh version from util module
([5103](https://github.com/holoviz/holoviews/pull/5103))
- Add missing bounds for the cache_size Parameter
([5105](https://github.com/holoviz/holoviews/pull/5105))
- Add current_key property to DynamicMap
([5106](https://github.com/holoviz/holoviews/pull/5106))
- Pin freetype on Windows to avoid matplotlib error
([5109](https://github.com/holoviz/holoviews/pull/5109))
- Handle the empty string as a group name
([5131](https://github.com/holoviz/holoviews/pull/5131))
- Do not merge partially overlapping Stream callbacks
([5133](https://github.com/holoviz/holoviews/pull/5133))
- Fix Violin matplotlib rendering with non-finite values
([5135](https://github.com/holoviz/holoviews/pull/5135))
- Fix matplotlib colorbar labeling for dim expressions
([5137](https://github.com/holoviz/holoviews/pull/5137))
- Fix datetime clipping on RangeXY stream
([5138](https://github.com/holoviz/holoviews/pull/5138))
- Ensure FreehandDraw renders when styles are set
([5139](https://github.com/holoviz/holoviews/pull/5139))
- Validate dimensionality of xarray interface data
([5140](https://github.com/holoviz/holoviews/pull/5140))
- Preserve cols when overlaying on layout
([5141](https://github.com/holoviz/holoviews/pull/5141))
- Fix Bars legend error when overlaid with annotation
([5142](https://github.com/holoviz/holoviews/pull/5142))
- Fix plotly Bar plots containing NaNs
([5143](https://github.com/holoviz/holoviews/pull/5143))
- Do not raise deprecated .opts warning for empty groups
([5144](https://github.com/holoviz/holoviews/pull/5144))
- Handle unsigned integer dtype in datashader aggregate operation
([5149](https://github.com/holoviz/holoviews/pull/5149))
- Delay projection comparison to optimize geoviews
([5152](https://github.com/holoviz/holoviews/pull/5152))
- Utility to convert datetime64 to int64 and test suite maintenance
([5157](https://github.com/holoviz/holoviews/pull/5157))
- Fix for Contours consistent of empty and nonempty paths
([5162](https://github.com/holoviz/holoviews/pull/5162))
- Fixed docs:
- Fix `fig_bounds` description in Plotting_with_Matplotlib.ipynb
([4983](https://github.com/holoviz/holoviews/pull/4983))
- Fix broken link in Gridded user guide
([5098](https://github.com/holoviz/holoviews/pull/5098))
- Improved docs:
- Switch to the Pydata Sphinx theme
([5163](https://github.com/holoviz/holoviews/pull/5163))

**September 16, 2021**

This is a hotfix release with a number of important bug fixes. Most
importantly, this version supports the recent bokeh 2.4.0
release. Many thanks to geronimos, peterroelants,
douglas-raillard-arm, philippjfr and jlstevens for contributing the
fixes in this release.

Bug fixes:

- Compatibility for bokeh 2.4 and fixes to processing of falsey
properties and visible style property
([5059](https://github.com/holoviz/holoviews/pull/5059),
[5063](https://github.com/holoviz/holoviews/pull/5063))
- Stricter validation of data.interface before calling subclass
([5050](https://github.com/holoviz/holoviews/pull/5050))
- Fix to prevent options being ignored in some cases
([5016](https://github.com/holoviz/holoviews/pull/5016))
- Improvements to linked selections including support for linked
selection lasso for cudf and improved warnings
([5044](https://github.com/holoviz/holoviews/pull/5044),
[5051](https://github.com/holoviz/holoviews/pull/5051))
- Respect apply_ranges at range computation level
([5081](https://github.com/holoviz/holoviews/pull/5081))
- Keep ordering of kdim when stacking Areas
([4971](https://github.com/holoviz/holoviews/pull/4971))
- Apply hover postprocessor on updates
([5039](https://github.com/holoviz/holoviews/pull/5039))

**July 16, 2021**

This is a hotfix release with a number of important bug fixes. Most
importantly, this version supports for the recent pandas 1.3.0
release. Many thanks to kgullikson88, philippjfr and jlstevens for
contributing the fixes in this release.

Bug fixes:

- Support for pandas>=1.3
([5013](https://github.com/holoviz/holoviews/pull/5013))
- Various bug fixes relating to dim transforms including the use of
parameters in slices and the use of getattribute
([4993](https://github.com/holoviz/holoviews/pull/4993),
[5001](https://github.com/holoviz/holoviews/pull/5001),
[5005](https://github.com/holoviz/holoviews/pull/5005))

**May 18, 2021**

This release primarily focuses on a number of bug fixes. Many thanks to
Hoxbro, nitrocalcite, brl0, hyamanieu, rafiyr, jbednar, jlstevens
and philippjfr for contributing.

Enhancements:

- Re-enable `SaveTool` for plots with `Tiles`
([4922](https://github.com/holoviz/holoviews/pull/4922))
- Enable dask `TriMesh` rasterization using datashader
([4935](https://github.com/holoviz/holoviews/pull/4935))
- Use dataframe index for `TriMesh` node indices
([4936](https://github.com/holoviz/holoviews/pull/4936))

Bug fixes:

- Fix hover for stacked `Bars`
([4892](https://github.com/holoviz/holoviews/pull/4892))
- Check before dereferencing Bokeh colormappers
([4902](https://github.com/holoviz/holoviews/pull/4902))
- Fix multiple parameterized inputs to `dim`
([4903](https://github.com/holoviz/holoviews/pull/4903))
- Fix floating point error when generating bokeh Palettes
([4911](https://github.com/holoviz/holoviews/pull/4911))
- Fix bug using dimensions with label on `Bars`
([4929](https://github.com/holoviz/holoviews/pull/4929))
- Do not reverse colormaps with '\_r' suffix a second time
([4931](https://github.com/holoviz/holoviews/pull/4931))
- Fix remapping of `Params` stream parameter names
([4932](https://github.com/holoviz/holoviews/pull/4932))
- Ensure `Area.stack` keeps labels
([4937](https://github.com/holoviz/holoviews/pull/4937))

Documentation:

- Updated Dashboards user guide to show `pn.bind` first
([4907](https://github.com/holoviz/holoviews/pull/4907))
- Updated docs to correctly declare Scatter kdims
([4914](https://github.com/holoviz/holoviews/pull/4914))

Compatibility:

Unfortunately a number of tile sources are no longer publicly
available. Attempting to use these tile sources will now issue warnings
unless `hv.config.raise_deprecated_tilesource_exception` is set to
`True` in which case exceptions will be raised instead.

- The `Wikipedia` tile source is no longer available as it is no longer
being served outside the wikimedia domain. As one of the most
frequently used tile sources, HoloViews now issues a warning and
switches to the OpenStreetMap (OSM) tile source instead.
- The `CartoMidnight` and `CartoEco` tile sources are no longer publicly
available. Attempting to use these tile sources will result in a
deprecation warning.

**April 8, 2021**

This release contains a small number of bug fixes, enhancements and
compatibility for the latest release of matplotlib. Many thanks to
stonebig, Hoxbro, jlstevens, jbednar and philippjfr.

Enhancements:

- Allow applying linked selections to chained `DynamicMap`
([4870](https://github.com/holoviz/holoviews/pull/4870))
- Issuing improved error message when `__radd__` called with an
integer ([4868](https://github.com/holoviz/holoviews/pull/4868))
- Implement `MultiInterface.assign`
([4880](https://github.com/holoviz/holoviews/pull/4880))
- Handle tuple unit on xarray attribute
([4881](https://github.com/holoviz/holoviews/pull/4881))
- Support selection masks and expressions on gridded data
([4882](https://github.com/holoviz/holoviews/pull/4882))

Bug fixes:

- Handle empty renderers when merging `HoverTool.renderers`
([4856](https://github.com/holoviz/holoviews/pull/4856))

Compatibility:

- Support matplotlib versions >=3.4
([4878](https://github.com/holoviz/holoviews/pull/4878))