Version 0.9.5

This release primarily focused on improvements and additions to the documentation. Many thanks to @MarcSkovMadsen, @philippjfr and @michaelaye for contributing to this release.

Enhancements:

• Add Template.save with ability to save to HTML and PNG but not embed (#1224)

Bug fixes:

• Fixed formatting of datetimes in DataFrame widget (#1221)
• Add panel/models/vtk/ subpackage to MANIFEST to ensure it is shipped with packages

Documentation:

• Add guidance about developing custom models (#1220)
• Add Folium example to gallery (#1189)
• Add FileDownload and FileInput example to gallery (#1193)

Version 0.9.4

This is a minor release fixing a number of regressions and compatibility issues which continue to crop up due to the upgrade to Bokeh 2.0 Additionally this release completely overhauls how communication in notebook environments are handled, eliminating the need to register custom callbacks with inlined JS callbacks to sync properties. Many thanks to the contributors to this release including @hyamanieu, @maximlt, @mattpap and the maintainer @philippjfr.

Enhancements:

• Switch to using CommManager in notebook hugely simplifying comms in notebooks and reducing the amount of inlined Javascript (#1171)
• Add ability to serve Flask apps directly using pn.serve (#1215)

Bug fixes:

• Fix bug in Template which caused all roots to instantiate two models for each component (#1216)
• Fixed bug with Bokeh 2.0 DataPicker datetime format (#1187)
• Publish Panel.js to CDN to allow static HTML exports with CDN resources to work (#1190)
• Handle bug in rendering Vega models with singular dataset (#1201)
• Removed escaping workaround for HTML models resulting in broken static exports (#1206)
• Fixed bug closing Tabs (#1208)
• Embed Panel logo in server index.html (#1209)

Compatibility:

• This release adds compatibility with Bokeh 2.0.1 which caused a regression in loading custom models

Version 0.9.3

This is a minor release fixing an issue with recent versions of Tornado. It also fixes issue with the packages built on the PyViz conda channel.

• Respect write-locks on synchronous Websocket events (#1170)

Version 0.9.2

This is a minor release with a number of bug fixes. Many thanks to @ceball, @Guillemdb and @philippjfr for contributing these fixes.

Bug fixes:

• Fix regression in DiscreteSlider layout (#1163)
• Fix for saving as PNG which regressed due to changes in bokeh 2.0 (#1165)
• Allow pn.serve to resolve Template instances returned by a function (#1167)
• Ensure Template can render empty HoloViews pane (#1168)

Version 0.9.1

This is very minor releases fixing small regressions in the 0.9.0 release:

Bug fixes:

• Fix issue with Button label not being applied (#1152)

• Pin pyviz_comms 0.7.4 to avoid issues with undefined vars (#1153)

Version 0.9.0

This is a major release primarily for compatibility with the recent Bokeh 2.0 release. Additionally this release has a small number of features and bug fixes:

Features:

• Added a MultiChoice widget (#1140)

• Add FileDownload widget (#915, #1146)

• Add ability to define Slider format option (#1142)

• Expose pn.state.cookies and pn.state.headers to allow accessing HTTP headers and requests from inside an app (#1143)

Bug fixes:

• Ensure DiscreteSlider respects layout options (#1144)

Removals:

• Slider no longer support callback_policy and callback_throttle as they have been replaced by the value_throttled property in bokeh

Version 0.8.1

This release is a minor release with a number of bug fixes and minor enhancements. Many thanks to the community of contributors including @bstadlbauer, @ltalirz @ceball and @gmoutsofor submitting the fixes and the maintainers, including @xavArtley, @jbednar and @philippjfr, for continued development.

Minor enhancements:

• Added verbose option to display server address (#1098) [@philippjfr]

Bug fixes:

• Fix PNG export due to issue with PhantomJS (#1081, #1092) [@bstadlbauer, @philippjfr]
• Fix for threaded server (#1090) [@xavArtley]
• Ensure Plotly Pane does not perform rerender on each property change (#1109) [@philippjfr]
• Fix issues with jslink and other callbacks in Template (#1135) [@philippjfr]
• Various fixes for VTK pane (#1123) [@xavArtley]
• Fixes for .show keyword arguments (#1073, #1106) [@gmoutso]

Version 0.8.0

This release focuses primarily on solidifying existing functionality, significantly improving performance and fixing a number of important bugs. Additionally this release contains exciting new functionality, including several new components. We want to thank the many contributors to this release (a full list is provided at the bottom), particularly @MarcSkovMadsen (the author of awesome-panel.org) and @xavArtley, who has been hard at work at improving VTK support. We also want to thank the remaining contributors including @philippjfr, @ceball, @jbednar, @jlstevens, @Italirz, @mattpap, @Jacob-Barhak, @stefjunod and @kgullikson88. This release required only minimal changes in existing APIs and added a small number of new ones, reflecting the fact that Panel is now relatively stable and is progressing steadily towards a 1.0 release.

Major Features & Enhancements

• Added new DeckGL pane (#1019, #1027)
• Major improvements to support for JS linking (#1007)
• Huge performance improvements when nesting a lot of components deeply (#867, #888, #895, #988)
• Add support for displaying callback errors and print output in the notebook simplifying debugging (#977)
• Add support for dynamically populating Tabs (#995)
• Added FileSelector widget to browse the servers file system and select files (#909)
• Add pn.serve function to serve multiple apps at once on the same serve (#963)
• Add a JSON pane to display json data in a tree format (#953)

Enhancements

• Updated Parameter mappings (#999)
• Ensure that closed tabs update Tabs.objects (#973)
• Fixed HoloViews axis linking across Template roots (#980)
• Merge FactorRange when linking HoloViews axes (#968)
• Expose title and other kwargs on .show() (#962)
• Let FileInput widget set filename (#956
• Expose further bokeh CLI commands and added help (#951)
• Enable responsive sizing for Vega/altair pane (#949)
• Added encode parameter to SVG pane (#913)
• Improve Markdown handling including syntax highlighting and indentation (#881)
• Add ability to define Template variables (#815)
• Allow configuring responsive behavior globally (#851)
• Ensure that changes applied in callbacks are reflected on the frontend immediately (#857)
• Add ability to add axes coordinates to VTK view (#817)
• Add config option for safe_embed which ensures all state is recorded (#1040)
• Implemented __signature__ for tab completion (#1029)

Bug fixes

• Fixed DataFrame widget selection parameter (#989)
• Fixes for rendering long strings on Windows systems (#986)
• Ensure that panel does not modify user objects (#967)
• Fix multi-level expand Param subobject (#965)
• Ensure load_notebook is executed only once (#1000)
• Fixed bug updating StaticText on server (#964)
• Do not link HoloViews axes with different types (#937)
• Ensure that integer sliders are actually integers (#876)
• Ensure that GridBox contents maintain size (#971)

Compatibility

• Compatibility for new Param API (#992, #998)
• Changes for compatibility with Vega5 and altair 4 (#873, #889, #892, #927, #933)

Backwards compatibility

• The Ace pane has been deprecated in favor of the Ace widget (#908)

Docs

• Updated Django multiple app example and user guide (#928) [@stefjunod]
• Clarify developer installation instructions, and fix up some metadata. (#952, #978)
• Added Param reference notebook (#944)
• Added Divider reference notebook

Version 0.7.0

This major release includes significant new functionality along with important bug and documentation fixes, including contributions from @philippjfr (maintainer and lead developer), @xavArtley (VTK support), @jbednar (docs), @DancingQuanta (FileInput), @a-recknagel (Python 3.8 support, misc), @julwin (TextAreaInput, PasswordInput), @rs2 (example notebooks), @xtaje (default values), @Karamya (Audio widget), @ceball, @ahuang11 , @eddienko, @Jacob-Barhak, @jlstevens, @jsignell, @kleavor, @lsetiawan, @mattpap, @maxibor, and @RedBeardCode.

Major enhancements:

• Added pn.ipywidget() function for using panels and panes as ipwidgets, e.g. in voila (#745, #755, #771)
• Greatly expanded and improved Pipeline, which now allows branching graphs (#712, #735, #737, #770)
• Added streaming helper objects, including for the streamz package (#767, #769)
• Added VTK gallery example and other VTK enhancements (#605, #606, #715, #729)
• Add GridBox layout (#608, #761, #763)
• New widgets and panes:
  • Progress bar (#726)
  • Video (#696)
  • TextAreaInput widget (#658)
  • PasswordInput widget (#655)
  • Divider (#756),
  • bi-directional jslink (#764)
  • interactive DataFrame pane for Pandas, Dask and Streamz dataframes (#560, #751)

Other enhancements:

• Make Row/Column scrollable (#760)
• Support file-like objects (not just paths) for images (#686)
• Added isdatetime utility (#687)
• Added repr, kill_all_servers, and cache to pn.state (#697,#776)
• Added Slider value_throttled parameter (#777)
• Extended existing widgets and panes:
  • WidgetBox can be disabled programmatically (#532)
  • Templates can now render inside a notebook cell (#666)
  • Added jscallback method to Viewable objects (#665)
  • Added min_characters parameter to AutocompleteInput (#721)
  • Added accept parameter to FileInput (#602)
  • Added definition_order parameter to CrossSelector (#570)
  • Misc widget fixes and improvements (#703, #717, #724, #762, #775)

Bug fixes and minor improvements:

• Removed mutable default args (#692, #694)
• Improved tests (#691, #699, #700)
• Improved fancy layout for scrubber (#571)
• Improved plotly datetime handling (#688, #698)
• Improved JSON embedding (#589)
• Misc fixes and improvements (#626, #631, #645, #662, #681, #689, #695, #723, #725, #738, #743, #744, #748, #749, #758, #768, #772, #774, #775, #779, #784, #785, #787, #788, #789)
• Prepare support for python 3.8 (#702)

Documentation:

• Expanded and updated FAQ (#750, #765)
• Add Comparisons section (#643)
• Docs fixes and improvements (#635, #670, #705, #708, #709, #740, #747, #752)

Version 0.6.4

This release includes a number of important bug fixes along with some minor enhancements, including contributions from @philippjfr, @jsignell, @ahuang11, @jonmmease, and @hoseppan.

Enhancements:

• Allow pn.depends and pn.interact to accept widgets and update their output when widget values change (#639)
• Add fancy_layout option to HoloViews pane (#543)
• Allow not embedding local files (e.g. images) when exporting to HTML (#625)

Bug fixes and minor improvements:

• Restore logging messages that were being suppressed by the distributed package (#682)
• HoloViews fixes and improvements (#595, #599, #601, #659)
• Misc other bug fixes and improvements (#575, #588, #649, #654, #657, #660, #667, #677)

Documentation:

• Added example of opening a URL from jslink (#607)