Version 1.12.0

This release provides a number of exciting new features as well as a set of important bug fixes. Many thanks to our users for reporting these issues, and special thanks to @ahuang11, @jonmmease, @poplarShift, @reckoner, @scottclowe and @syhooper for their contributions to the code and the documentation.

Features:

• New plot options for controlling layouts including a responsive mode as well as improved control over aspect using the newly updated bokeh layout engine (#3450, #3575)
• Added a succinct and powerful way of creating DynamicMaps from functions and methods via the new .apply method (#3554, #3474)

Enhancements:

• Added a number of new plot options including a clabel param for colorbars (#3517), exposed Sankey font size (#3535) and added a radius for bokeh nodes (#3556)
• Switched notebook output to use an HTML mime bundle instead of separate HTML and JS components (#3574)
• Improved support for style mapping constant values via dim.categorize (#3578)

Bug fixes:

• Fixes for colorscales and colorbars (#3572, #3590)
• Other miscellaneous fixes(#3530, #3536, #3546, #3560, #3571, #3580, #3584, #3585, #3594)

v1.11.3

This is the last micro-release in the 1.11 series providing a number
of important fixes. Many thanks to our users for reporting these
issues and @poplarShift and @henriqueribeiro for contributing a number
of crucial fixes.

Bug fixes:

• All unused Options objects are now garbage collected fixing the last
  memory leak (#3438)
• Ensured updating of size on matplotlib charts does not error (#3442)
• Fix casting of datetimes on dask dataframes (#3460)
• Ensure that calling redim does not break streams and links (#3478)
• Ensure that matplotlib polygon plots close the edge path (#3477)
• Fixed bokeh ArrowPlot error handling colorbars (#3476)
• Fixed bug in angle conversion on the VectorField if invert_axes (#3488)
• Ensure that all non-Annotation elements support empty constructors (#3511)
• Fixed bug handling out-of-bounds errors when using tap events on
  datetime axis (#3519)

Enhancements:

• Apply Labels element offset using a bokeh transform allowing Labels
  element to share data with original data (#3445)
• Allow using datetimes in xlim/ylim/zlim (#3491)
• Optimized rendering of TriMesh wireframes (#3495)
• Add support for datetime formatting when hovering on Image/Raster (#3520)
• Added Tiles element from GeoViews (#3515)

Version 1.11.2

This is a minor bug fix release with a number of small but important
bug fixes. Special thanks to @darynwhite for his contributions.

Bug fixes:

• Compatibility with pandas 0.24.0 release (#3433)
• Fixed timestamp selections on streams (#3427)
• Fixed persisting options during clone on Overlay (#3435)
• Ensure cftime datetimes are displayed as a slider (#3413)

Enhancements:

• Allow defining hook on backend load (#3429)
• Improvements for handling graph attributes in Graph.from_networkx (#3432)

Version 1.11.1

This is a minor bug fix release with a number of important bug fixes,
enhancements and updates to the documentation. Special thanks to
@ahuang11, @garibarba and @Safrone for their contributions.

Bug fixes:

• Fixed bug plotting adjoined histograms in matplotlib (#3377)
• Fixed bug updating bokeh RGB alpha value (#3371)
• Handled issue when colorbar limits were equal in bokeh (#3382)
• Fixed bugs plotting empty Violin and BoxWhisker elements (#3397, #3405)
• Fixed handling of characters that have no uppercase on Layout and Overlay objects ((#3403)
• Fixed bug updating Polygon plots in bokeh (#3409)

Enhancements:

• Provide control over gridlines ticker and mirrored axis ticker by default (#3398)
• Enabled colorbars on CompositePlot classes such as Graphs, Chords etc. (#3397)
• Ensure that xarray backend retains dimension metadata when casting element (#3401)
• Consistently support clim options (#3382)

Documentation:

• Completed updates from .options to .opts API in the documentation ([#3364]((#3364), #3367

Version 1.11.0

This is a major release containing a large number of features and API improvements. Specifically this release was devoted to improving the general usability and accessibility of the HoloViews API and deprecating parts of the API in anticipation for the 2.0 release. To enable deprecation warnings for these deprecations set:

hv.config.future_deprecations = True

The largest updates to the API relate to the options system which is now more consistent, has better validation and better supports notebook users without requiring IPython magics. The new dim transform generalizes the mapping from data dimensions to visual dimensions, greatly increasing the expressive power of the options system. Please consult the updated user guides for more information.

Special thanks for the contributions by Andrew Huang (@ahuang11), Julia Signell (@jsignell), Jon Mease (@jonmmease), and Zachary Barry (@zbarry).

Features:

• Generalized support for style mapping using dim transforms (#2152)
• Added alternative to opts magic with tab-completion (#3173)
• Added support for Polygons with holes and improved contours operation (#3092)
• Added support for Links to express complex interactivity in JS (#2832)
• Plotly improvements including support for plotly 3.0 (#3194), improved support for containers (#3255) and support for more elements (#3256)
• Support for automatically padding plots using new padding option (#2293)
• Added xlim/ylim plot options to simplify setting axis ranges (#2293)
• Added xlabel/ylabel plot options to simplify overriding axis labels (#2833)
• Added xformatter/yformatter plot options to easily override tick formatter (#3042)
• Added active_tools options to allow defining tools to activate on bokeh plot initialization (#3251)
• Added FreehandDraw stream to allow freehand drawing on bokeh plots (#2937)
• Added support for cftime types for dates which are not supported by standard datetimes and calendars (#2728)
• Added top-level save and render functions to simplify exporting plots (#3134)
• Added support for updating Bokeh bokeh legends (#3139)
• Added support for indicating directed graphs with arrows (#2521)

Enhancements:

• Improved import times (#3055)
• Adopted Google style docstring and documented most core methods and classes (#3128

Bug fixes:

• GIF rendering fixed under Windows (#3151)
• Fixes for hover on Path elements in bokeh (#2472, #2872)
• Fixes for handling TriMesh value dimensions on rasterization (#3050)

Deprecations:

• finalize_hooks renamed to hooks (#3134)
• All *_index and related options are now deprecated including color_index, size_index, scaling_method, scaling_factor, size_fn (#2152)
• Bars group_index, category_index and stack_index are deprecated in favor of stacked option
  (#2828)
• Iris interface was moved to GeoViews (#3054)
• Top-level namespace was cleaned up (#2224)
• ElementOperation, Layout.display and mdims argument to .to now fully removed (#3128)
• Element.mapping, ItemTable.values, Element.table, HoloMap.split_overlays, ViewableTree.from_values, ViewableTree.regroup and Element.collapse_data methods now marked for deprecation (#3128)

Version 1.10.9

Version 1.10.9 is a very minor release to fix an important regression in how streams are handled in the 1.10.8 release. Anyone currently using 1.10.8 is encouraged to upgrade to 1.10.9.

Fixes:

• Fixes regression defining linked streams on empty Element or DynamicMap (#3113)
• Fixed bug colormapping Labels element (#3114)

Compatibility:

• Relaxed pinned bokeh version to include all versions up to 1.1.0 (#3115)

Version 1.10.8

This a likely the last hotfix release in the 1.10.x series containing
fixes for compatibility with bokeh 1.0 and matplotlib 3.0. It also
contains a wide array of fixes contributed and reported by users:

Special thanks for the contributions by Andrew Huang (@ahuang11),
Julia Signell (@jsignell), and Zachary Barry (@zbarry).

Enhancements:

• Add support for labels, choord, hextiles and area in .to interface (#2924)
• Allow defining default bokeh themes as strings on Renderer (#2972)
• Allow specifying fontsize for categorical axis ticks in bokeh (#3047)
• Allow hiding toolbar without disabling tools (#3074)
• Allow specifying explicit colormapping on non-categorical data (#3071)
• Support for displaying xarray without explicit coordinates (#2968)

Fixes:

• Ensured that objects are garbage collected when using
  linked streams (#2111)
• Allow dictionary data to reference values which are not dimensions (#2855, #2859)
• Fixes for zero and non-finite ranges in datashader operation (#2860, #2863,
  #2869)
• Fixes for CDSStream and drawing tools on bokeh server (#2915)
• Fixed issues with nans, datetimes and streaming on Area and Spread
  elements (#2951, c55b044)
• General fixes for datetime handling (#3005, #3045, #3075)
• Fixed handling of curvilinear and datetime coordinates on QuadMesh (#3017, #3081)
• Fixed issue when inverting a shared axis in bokeh (#3083)
• Fixed formatting of values in HoloMap widgets (#2954)
• Fixed setting fontsize for z-axis label (#2967)

Compatibility:

• Suppress warnings about rcParams in matplotlib 3.0 (#3013, #3058, #3104)
• Fixed incompatibility with Python <=3.5 (#3073)
• Fixed incompatibility with bokeh >=1.0 (#3051)

Documentation:

• Completely overhauled the FAQ (#2928, #2941, #2959, #3025)

Version 1.10.7

This a very minor hotfix release mostly containing fixes for datashader
aggregation of empty datasets:

Fixes:

• Fix datashader aggregation of empty and zero-range data (#2860, #2863)
• Disable validation for additional, non-referenced keys in the DictInterface (#2860)
• Fixed frame lookup for non-overlapping dimensions (#2861)
• Fixed ticks on log Colorbar if low value <= 0 (#2865)

Version 1.10.6

This another minor bug fix release in the 1.10 series and likely the
last one before the upcoming 1.11 release. In addition to some important
fixes relating to datashading and the handling of dask data, this
release includes a number of enhancements and fixes.

Enhancements:

• Added the ability to specify color intervals using the color_levels
  plot options (#2797)
• Allow defining port and multiple websocket origins on BokehRenderer.app (#2801)
• Support for datetimes in Curve step interpolation (#2757)
• Add ability to mute legend by default (#2831)
• Implemented ability to collapse and concatenate gridded data (#2762)
• Add support for cumulative histogram and explicit bin (#2812)

Fixes:

• Dataset discovers multi-indexes on dask dataframe (#2789)
• Fixes for datashading NdOverlays with datetime axis and data with
  zero range (#2829, #2842)

Version 1.10.5

This is a minor bug fix release containing a mixture of small enhancements, a number of important fixes and improved compatibility with pandas 0.23.

Enhancements:

• Graph.from_networkx now extracts node and edge attributes from networkx graphs (#2714)
• Added throttling support to scrubber widget (#2748)
• histogram operation now works on datetimes (#2719)
• Legends on NdOverlay containing overlays now supported (#2755)
• Dataframe indexes may now be referenced in .to conversion (#2739)
• Reindexing a gridded Dataset without arguments now behaves consistently with NdMapping types and drops scalar dimensions making it simpler to drop dimensions after selecting (#2746)

Fixes:

• Various fixes for QuadMesh support including support for contours, nan coordinates and inverted coordinates (#2691, #2702, #2771)
• Fixed bugs laying out complex layouts in bokeh (#2740)
• Fix for adding value dimensions to an xarray dataset (#2761

Compatibility:

• Addressed various deprecation warnings generated by pandas 0.23 (#2699, #2725, #2767)