Panel

Date: 2020-04-02

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](https://github.com/holoviz/panel/pull/1171))
- Add ability to serve Flask apps directly using pn.serve ([1215](https://github.com/holoviz/panel/pull/1215))

Bug fixes:

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

Compatibility:

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

Date: 2019-03-21

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](https://github.com/holoviz/panel/pull/1170)](https://github.com/holoviz/panel/issues/1170))

Date: 2019-03-21

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](https://github.com/holoviz/panel/pull/1163)](https://github.com/holoviz/panel/issues/1164))
- Fix for saving as PNG which regressed due to changes in bokeh 2.0 ([1165](https://github.com/holoviz/panel/pull/1165)](https://github.com/holoviz/panel/issues/1165))
- Allow pn.serve to resolve Template instances returned by a function ([1167](https://github.com/holoviz/panel/pull/1167)](https://github.com/holoviz/panel/issues/1167))
- Ensure Template can render empty HoloViews pane ([1168](https://github.com/holoviz/panel/pull/1168)](https://github.com/holoviz/panel/issues/1168))

Date: 2019-03-19

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](https://github.com/holoviz/panel/pull/1152)](https://github.com/holoviz/panel/issues/1152))
- Pin pyviz_comms 0.7.4 to avoid issues with undefined vars ([1153](https://github.com/holoviz/panel/pull/1153)](https://github.com/holoviz/panel/issues/1153))

Date: 2019-03-13

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](https://github.com/holoviz/panel/pull/1140)](https://github.com/holoviz/panel/issues/1140))
- Add `FileDownload` widget ([915](https://github.com/holoviz/panel/issues/915), [#1146](https://github.com/holoviz/panel/pull/1146)](https://github.com/holoviz/panel/issues/1146))
- Add ability to define `Slider` format option ([1142](https://github.com/holoviz/panel/pull/1142)](https://github.com/holoviz/panel/issues/1142))
- Expose `pn.state.cookies` and `pn.state.headers` to allow accessing HTTP headers and requests from inside an app ([1143](https://github.com/holoviz/panel/pull/1143))

Bug fixes:

- Ensure `DiscreteSlider` respects layout options ([1144](https://github.com/holoviz/panel/pull/1144)](https://github.com/holoviz/panel/issues/1144))

Removals:

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

Date: 2019-03-11

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](https://github.com/holoviz/panel/pull/1098)](https://github.com/holoviz/panel/issues/1098)) [philippjfr]

Bug fixes:

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