Rough curation of changelog highlights for 8.0

Author: jasongrout

docs/source/changelog.md

@@ -2,6 +2,64 @@
 
 A summary of changes in ipywidgets. For more detailed information, see the issues and pull requests for the appropriate milestone on [GitHub](https://github.com/jupyter-widgets/ipywidgets).
 
+## [v8.0](https://github.com/jupyter-widgets/ipywidgets/releases/tag/v8.0)
+
+See the [ipywidgets
+8.0](https://github.com/jupyter-widgets/ipywidgets/milestone/30?closed=1)
+milestone on GitHub for the full list of pull requests and issues closed.
+
+
+## Users
+
+* The default CDN is changed from unpkg to jsDelivr ([#3121](https://github.com/jupyter-widgets/ipywidgets/pull/3121), [#1627](https://github.com/jupyter-widgets/ipywidgets/issues/1627))
+* Documentation overhaul ([#3104](https://github.com/jupyter-widgets/ipywidgets/pull/3104), [#3096](https://github.com/jupyter-widgets/ipywidgets/issues/3096), [#3099](https://github.com/jupyter-widgets/ipywidgets/pull/3099), [#3076](https://github.com/jupyter-widgets/ipywidgets/issues/3076), [#2824](https://github.com/jupyter-widgets/ipywidgets/pull/2824))
+* Use data-jupyter-widgets-cdn-only attribute to load modules only from cdn ([#2792](https://github.com/jupyter-widgets/ipywidgets/pull/2792), [#2786](https://github.com/jupyter-widgets/ipywidgets/issues/2786))
+* Revamp file upload widget `.value` attribute ([#2767](https://github.com/jupyter-widgets/ipywidgets/pull/2767), [#2724](https://github.com/jupyter-widgets/ipywidgets/pull/2724), [#2666](https://github.com/jupyter-widgets/ipywidgets/pull/2666), [#2480](https://github.com/jupyter-widgets/ipywidgets/issues/2480))
+* Borders independently: `border_top`, `border_right`, `border_bottom`, `border_left` ([#2757](https://github.com/jupyter-widgets/ipywidgets/pull/2757))
+* Make selection container titles a tuple of strings ([#2746](https://github.com/jupyter-widgets/ipywidgets/pull/2746))
+* Change media widgets to use memory views. ([#2723](https://github.com/jupyter-widgets/ipywidgets/pull/2723))
+* Upgrade to FontAwesome 5 in html-manager ([#2713](https://github.com/jupyter-widgets/ipywidgets/pull/2713))
+* Slider implementation now uses [nouislider](https://refreshless.com/nouislider/) instead of jquery-ui ([#2712](https://github.com/jupyter-widgets/ipywidgets/pull/2712), [#630](https://github.com/jupyter-widgets/ipywidgets/issues/630))
+* Play widget now toggles between play and pause button as needed ([#2703](https://github.com/jupyter-widgets/ipywidgets/pull/2703), [#2671](https://github.com/jupyter-widgets/ipywidgets/issues/2671))
+* Tooltips everywhere ([#2680](https://github.com/jupyter-widgets/ipywidgets/pull/2680))
+* Drop support for mapping types as selection options ([#2679](https://github.com/jupyter-widgets/ipywidgets/pull/2679), [#1958](https://github.com/jupyter-widgets/ipywidgets/issues/1958))
+* Focus or blur a widget. ([#2664](https://github.com/jupyter-widgets/ipywidgets/pull/2664), [#2692](https://github.com/jupyter-widgets/ipywidgets/pull/2692), [#2691](https://github.com/jupyter-widgets/ipywidgets/pull/2691), [#2690](https://github.com/jupyter-widgets/ipywidgets/pull/2690))
+* Tabbable or not tabbable ([#2640](https://github.com/jupyter-widgets/ipywidgets/pull/2640))
+* Tagsinput widget ([#2591](https://github.com/jupyter-widgets/ipywidgets/pull/2591))
+* Drop notebook dependency from widgetsnbextension ([#2590](https://github.com/jupyter-widgets/ipywidgets/pull/2590))
+* Drop support for legacy python 2.7 and eol 3.4 ([#2558](https://github.com/jupyter-widgets/ipywidgets/pull/2558), [#2655](https://github.com/jupyter-widgets/ipywidgets/pull/2655))
+* Cast 'value' in range sliders to a tuple ([#2441](https://github.com/jupyter-widgets/ipywidgets/pull/2441))
+* Added a layout widget for 'stacked' layout ([#2376](https://github.com/jupyter-widgets/ipywidgets/pull/2376))
+* Play widget: expose playing and repeat  ([#2283](https://github.com/jupyter-widgets/ipywidgets/pull/2283), [#1897](https://github.com/jupyter-widgets/ipywidgets/issues/1897))
+* Fix debouncing and throttling code ([#3060](https://github.com/jupyter-widgets/ipywidgets/pull/3060))
+* Fix regression on spinning icons ([#2685](https://github.com/jupyter-widgets/ipywidgets/pull/2685), [#2477](https://github.com/jupyter-widgets/ipywidgets/issues/2477))
+* Fix selection container default index ([#1823](https://github.com/jupyter-widgets/ipywidgets/pull/1823))
+* Remove deprecated overflow properties ([#2688](https://github.com/jupyter-widgets/ipywidgets/pull/2688))
+
+### Developers
+
+#### Python
+
+* `Widget.widgets` and `Widget.widget_types` have been made private variables ([#3122](https://github.com/jupyter-widgets/ipywidgets/pull/3122))
+* Generate the widget data spec as JSON ([#2193](https://github.com/jupyter-widgets/ipywidgets/pull/2193))
+* Use _repr_mimebundle_ and require ipython 6.1 or later. ([#2021](https://github.com/jupyter-widgets/ipywidgets/pull/2021), [#1811](https://github.com/jupyter-widgets/ipywidgets/issues/1811))
+
+#### Javascript
+
+* Fix CSS variable names to match JupyterLab names ([#2801](https://github.com/jupyter-widgets/ipywidgets/pull/2801), [#2062](https://github.com/jupyter-widgets/ipywidgets/issues/2062))
+* Delete display_model and display_view ([#2752](https://github.com/jupyter-widgets/ipywidgets/pull/2752), [#2751](https://github.com/jupyter-widgets/ipywidgets/issues/2751))
+* Drop underscore usage ([#2742](https://github.com/jupyter-widgets/ipywidgets/pull/2742))
+* Upgrade to es2017 javascript ([#2725](https://github.com/jupyter-widgets/ipywidgets/pull/2725))
+* Split base manager into separate packages ([#2710](https://github.com/jupyter-widgets/ipywidgets/pull/2710), [#2561](https://github.com/jupyter-widgets/ipywidgets/issues/2561))
+* Change phosphor to lumino ([#2681](https://github.com/jupyter-widgets/ipywidgets/pull/2681))
+* Widgetmanagerbase: improve create_view return type ([#2662](https://github.com/jupyter-widgets/ipywidgets/pull/2662))
+* Labmanager refactor ([#2532](https://github.com/jupyter-widgets/ipywidgets/pull/2532))
+* Make more of lab manager dependencies optional ([#2528](https://github.com/jupyter-widgets/ipywidgets/pull/2528))
+* Remove class `jupyter-widgets` from jp-outputarea-output node ([#2500](https://github.com/jupyter-widgets/ipywidgets/pull/2500))
+* Removed deprecated signature of the `register` decorator ([#2695](https://github.com/jupyter-widgets/ipywidgets/pull/2695))
+* Remove deprecated `handle_kernel` alias ([#2694](https://github.com/jupyter-widgets/ipywidgets/pull/2694))
+
+
 ## 7.6
 
 To see the full list of pull requests and issues, see the [7.6.0 milestone](https://github.com/jupyter-widgets/ipywidgets/milestone/31?closed=1) on GitHub.