From JupyterLab 3.1, file documents and notebooks have collaborative editing using the Yjs shared editing framework. Editors are not collaborative by default; to activate it, start JupyterLab with the --collaborative flag. See full documentation on collaboration.
The undo/redo history in the notebook is now document-wide (tracking changes across all cells); the future verisions will enable restoring the previous behaviour of per-cell undo/redo.
Table of Contents received multiple new features and settings described in the user documentation.
The debugger received many improvements, including basic support for evaluating code at a breakpoint, and for variable inspection.
The closing bracket is no longer automatically added by default; the old behaviour can be re-enabled from the menu bar (Settings -> Auto Close Brackets) or from the Advanced Settings Editor.
A new visual indicator was introduced to highlight cells in which the code changed in the editor since last execution: <img alt="A GIF of the visual indicator showing up after editing a cell." src="https://user-images.githubusercontent.com/21197331/120619861-ae957d80-c45c-11eb-8640-b25b8b659ad4.gif">
Many other new features were added as documented below.

New features added

General: Shared editing with collaborative notebook model. #10118 (@dmonad)
Debugger: Implemented variable inspection when the debugger has started #10025 (@JohanMabille)
Debugger: Basic support for evaluating code at a breakpoint #9930 (@jtpio)
Notebook: Show a visual indicator that the cell has been edited #10296 (@martinRenou)
Notebook: Find and replace within a single cell #10067 (@jess-x)
Notebook: Copy cell output to clipboard #10282 (@cameron-toy)
Notebook: Add support for collapsing hierarchy of headings #10260 (@marthacryan)
File Browser: Add shortcuts #10206 (@martinRenou)
Table of Contents: Add capacity to skip H1 Headers #9994 (@skyetim)
Table of Contents: Add context menus to sections containing runnable code cells #10167 (@jess-x)
Completer: Added tab cycling to Completer #10147 (@cameron-toy)
Customization: Build context menu from settings for easy customization #10373 (@fcollonval)
Customization: Build menus from settings #10254 (@fcollonval)
Customization: Disable autoClosingBrackets by default everywhere #9488 (@telamonian)
Customization: Add cursorBlinkRate settings for editors #10485 (@fcollonval)
Licenses: Add a list of licenses accessible from the UI #9779 (@bollwyvl)

Enhancements made

Add license-webpack-plugin #9519 (@bollwyvl)
Focus cells on split and leave cursor in cell with selection when splitting #10297 (@goanpeca)
Fixes doc string for toc syncCollapseState setting #10639 (@andrewfulton9)
Allow to set custom position for Tooltip #10590 (@krassowski)
Rename files in collaborative mode #10564 (@hbcarlos)
Reorganize settings menu for text editor #10563 (@fcollonval)
Add promptCellConfig to Code Console Settings #10555 (@jess-x)
communicate heading collapse between ToC and Notebook #10545 (@andrewfulton9)
feat: add options to include cell output in headings #10537 (@skyetim)
Open inspector split to the right #10519 (@legendb317)
Simple mode rename improvements 2.0 #10518 (@cameron-toy)
Make current kernel the default in kernel selector #10510 (@gereleth)
Add selectionExecuted and executionScheduled signals + update executed signal to include error status/info #10493 (@mwakaba2)
Scroll cell into view after output collapse #10491 (@gereleth)
Collaborative renaming & moving of files #10470 (@dmonad)
Update inspector open #10449 (@legendb317)
dirty cell: Store the code source as true source of output #10438 (@fcollonval)
RTC: Anonymous user names based on the moons of Jupyter #10411 (@dmonad)
Add icon for .jl files in explorer #10397 (@shngt)
Support arrow keys for button navigation #10349 (@jahn96)
Feature: select all cells with tags in toc #10346 (@NPetz)
[licenses] use serverSettings from serviceManager, style tweaks #10329 (@bollwyvl)
Filebrowser ContextMenu: Use separators #10293 (@martinRenou)
Add a plugin to be able to swap the doc provider #10256 (@jtpio)
Completer: expose activeIndex and indexChanged #10244 (@hbcarlos)
DirListing: Refactor selection so that it's based on path not name #10237 (@martinRenou)
DirListing: Allow for no sorting when clicking on headers #10236 (@martinRenou)
Improve error handling in labextension install #10233 (@akx)
FileBrowser: Add protected method for creating the dirlisting #10216 (@martinRenou)
added new command called runAllEnabled #10215 (@sarahspak)
Filebrowser: Allow for escaping renaming #10205 (@martinRenou)
Add new widget area below the dockpanel #10201 (@fcollonval)
Debugger: show button shortcuts in tooltips #10199 (@jess-x)
Restore the relative sizes of areas in split panel #10196 (@krassowski)
Move open-with to its own plugin, so it can be disabled independently. #10193 (@robertpyke)
key-bindings to codemirror search in single cell #10184 (@jess-x)
Rename at file creation #10181 (@martinRenou)
Scroll into view on each step/frame changes/... #10160 (@mlucool)
Added support for namespace packages in labextensions. #10150 (@mellesies)
Color contrast adjustments for sidebar and command palette #10146 (@isabela-pf)
Rename simple interface documents from the title widget #10140 (@cameron-toy)
Perf: Add virtual Notebook for delayed cell rendering #10131 (@goanpeca)
Perf: Trim notebook large output for better performance #10129 (@goanpeca)
Perf: Codemirror performance enhancement #10128 (@goanpeca)
Perf: Update CSS for performance enhancements #10127 (@goanpeca)
Add Skip Link #10126 (@0618)
Allow Use of CDN to be Configurable for Fetching Package Metadata #10125 (@jhamet93)
Allow NPM Registry and CDN Registry to be Configurable #10110 (@jhamet93)
Fix last modified column toggle, allow to set it permanently #10100 (@krassowski)
TOC current position #10099 (@andrewfulton9)
Add 'merge cell above/below' commands with shortcuts #10076 (@krassowska)
Disable escape key and click-outside-dialog behaviors if hasClose = false #10049 (@DianeHu)
Name (un-renamed) file on first save #10043 (@jess-x)
Improve UX when a user restarts their Notebook server via JupyterHub #10032 (@vkaidalov-rft)
Create New commands for common file types associated with available kernels #10009 (@ohrely)
feat: CommandLinker Support in Markdown cells #9909 (@0618)
Add support for Gitpod editor #9883 (@saulshanabrook)
Move documentation panel rendering to renderer #9663 (@krassowski)
transition header element to div.header for accessibility #9648 (@tonyfast)
Add aria roles and labels #9622 (@marthacryan)
Vertical notebook cell prompts on mobile #9464 (@jtpio)
Debugger keyboard shortcuts #9154 (@mnowacki-b)
Implement a guard for pending user input to avoid deadlocks #8713 (@echarles)
Add null fileformat #7596 (@telamonian)
Search installed extensions #7423 (@jtpio)
Add "go-up" navigation support in filebrowser, fix other shortcuts behaviour #6859 (@krassowski)

Bugs fixed

Workaround disappearing palette issue by using blur #10693 (@krassowski)
Set anonymous username bug #10686 (@hbcarlos)
Add icon and mnemonic menu attributes in settings #10678 (@fcollonval)
Restore the focus target check removed in #10517 #10664 (@krassowski)
Fixed event handler in debugger session test #10651 (@JohanMabille)
Fix #10391 - incorrect cursor position after autocomplete #10647 (@dmonad)
Fix error messages when creating new dirs/files in a read only dir #10641 (@vkaidalov-rft)
More automated release fixes #10621 (@blink1073)
Disable autoclosing brackets by default in console #10612 (@jasongrout)
Restore current sidebar widget even if sides are switched #10605 (@afshin)
Save only workspace name as metadata.id instead of full path #10603 (@afshin)
Invoke onCellInserted when rendering a placeholder cell #10602 (@echarles)
Fix font-weight for collaborative cursor caret #10598 (@krassowski)
Do not show tooltip when completer is active #10588 (@krassowski)
Only save and use valid user settings for the editor #10585 (@jasongrout)
Remove tabIndex taking focus away from notebook #10580 (@krassowski)
Open Help menu's Jupyter Forum in a new browser tab by default #10574 (@isabela-pf)
Move all child cells when collapsed markdown heading is moved #10571 (@marthacryan)
Restore JupyterLabMenu missing menu attribute #10567 (@fcollonval)
Completer: Do not announce subset match selection if it did not change #10556 (@krassowski)
Fix string variable in debugger tree view #10550 (@fcollonval)
Fix dialog windows ignoring buttons focus #10532 (@krassowski)
Fix contrast issues in command palette and file browser #10531 (@krassowski)
fix running cell when focused on output #10517 (@cameron-toy)
Check to make sure process.argv exists before using it. #10507 (@jasongrout)
[HOTFIX] Render the correct index placeholder cell #10505 (@echarles)
Remove content-visibility css prop to avoid jumpy scrollbar #10503 (@echarles)
Fix checkbox styling #10483 (@fcollonval)
Fix icons code for TOC and listings-info #10476 (@krassowski)
Fix watch mode #10444 (@fcollonval)
Restore maxNumberOutputs removed in #10131 #10432 (@krassowski)
Fix console error when closing notebook #10426 (@marthacryan)
Focus on "Cancel" rather than "Delete" in delete dialog #10400 (@krassowski)
Fix the docmanager:name-on-save command #10355 (@jtpio)
Fix codemirror options updating #10353 (@jasongrout)
Fix incomplete transition to .path from .name #10281 (@krassowski)
Fix filebrowser focus issue #10280 (@krassowski)
Bump marked.js (and types) to pull fix for rendering #10274 (@krassowski)
Fix autocompletion issue #10234 (@dmonad)
show user dialog when attempting folder drop #10209 (@dharmaquark)
Workaround Chromium issue with iframe reload/href #10185 (@krassowski)
Upgrade CodeMirror to 5.61.0 (fixes indentation for Python type hints) #10175 (@krassowski)
fix document count in title #10168 (@jess-x)
Debugger: Remove all breakpoints should confirm action first #10161 (@mlucool)
fix: highlight tab focused buttons and Dir List #10153 (@0618)
Fix handling of mathjax in notebook example #10134 (@jtpio)
Fix dry run logic in publish script #10068 (@jtpio)
Fix #7525 by setting yarn.lock permissions #10063 (@jluttine)
Add cell id per notebook format 4.5 #10018 (@jayqi)
[Fix] Copy shareable link command - fix the filename encoding (for files with spaces in the name) #10015 (@ognjenjevremovic)
fixed ellipsis character after menu items in UI #10000 (@RodyLipson)
Fix js-apputils session context tests #9997 (@jtpio)
Fix escaping of urls and paths #9978 (@jasongrout)
Do not make unnecessary npm registry requests #9974 (@jasongrout)
Remove lookbehind from ToC MD regex for Safari #9962 (@dge8)
DocRegistry FileType pattern matching doesn't work #9958 (@ajbozarth)
Made disposable optional for widget extensions #9954 (@loichuder)
Fix ToC markdown bug for HTML comments #9938 (@marthacryan)
Make Table of Contents extension not rewrite all notebook headers. #9932 (@jasongrout)
Fix watch mode for external extensions #9915 (@ajbozarth)
Add websocket token auth in case of different ws domain #9898 (@darcsoel)
Bug fix for extension watch mode behavior #9889 (@afshin)
Do not display the splash screen in the application state plugin #9875 (@jasongrout)
Allow overrides.json to override default shortcuts. #9858 (@jasongrout)
Fix contrast of debugger icon when selected #9851 (@krassowski)
Remove the previous file_to_run logic #9847 (@jtpio)
Add missing return types to fileeditor-extension/src/commands.ts #9844 (@jtpio)
Fix example pins, don't prettier ipynb_checkpoints #9835 (@bollwyvl)
Remove the auto-switch to “mobile” mode, and behavior switches associated with mobile mode #9831 (@jasongrout)
Fix the display of breakpoints on restore #9824 (@jtpio)
@jupyterlab/rendermime: upgraded marked dep past vulnerability #9809 (@telamonian)
Fix Services Tests #9806 (@afshin)
Fix label for "Create Console for Editor" #9794 (@krassowski)
Fix mimerender test example and test in CI #9782 (@afshin)
Correct synchronization of tags between metadata and tags widget #9773 (@fcollonval)
Fix race condition in session startup #9766 (@afshin)
[BugFix] ArgumentConflict is not defined #9760 (@andrewfulton9)
Fix search provider not recognising text nodes #9746 (@krassowski)
Do not take focus away from search panel (for navigateToCurrentDirectory) #9745 (@krassowski)
Fix uninstallation of packages in extension manager #9744 (@afshin)
Add missing default_url fields to more examples #9737 (@afshin)
Add missing default_url fields to examples #9731 (@afshin)
Fix debug flag handling in build command #9715 (@afshin)
Use Path.resolve() to get canonical case-sensitive path names #9709 (@jasongrout)
Fix use of hyphen in module name #9655 (@hbcarlos)

Maintenance and upkeep improvements

Clean up Link Caching #10687 (@afshin)
Clean up link checking #10673 (@blink1073)
Fix integrity2 test #10660 (@fcollonval)
Context menu plugin schema #10645 (@jtpio)
Move the context menu building logic to a separate plugin #10624 (@jtpio)
Fix typo in the dirty plugin id #10623 (@jtpio)
More releaser fixes #10614 (@afshin)
Revert name file feature #10609 (@jess-x)
Fix usage of Releaser #10608 (@afshin)
Finish Releaser Integration #10606 (@afshin)
Fix js-services test with the new ipykernel 6 #10592 (@jtpio)
Switch to using a PromiseDelegate in yprovider.ts #10587 (@jtpio)
Rename to YjsEchoWebSocket #10586 (@jtpio)
Give answered issues action permission to write #10583 (@jasongrout)
Update typedoc #10582 (@jasongrout)
Set the stale message to have an actual value. #10575 (@jasongrout)
Move the application status check to a separate plugin #10572 (@jtpio)
Skip the ipykernel debugger test #10569 (@jtpio)
Add new file to CodeQL path-ignore #10568 (@jtpio)
Fix closing answered issues by setting the stale-issue-message attribute #10553 (@jasongrout)
Switch to dev-mode for ui-tests #10549 (@fcollonval)
Export awareness #10539 (@hbcarlos)
Move answered workflow file to the workflows directory #10536 (@jasongrout)
Update skiplink implementation #10535 (@isabela-pf)
DirListing: Make mouse events methods protected #10527 (@martinRenou)
Refresh yarn.lock in preparation for 3.1 #10516 (@jasongrout)
Update webpack dependency #10515 (@jasongrout)
Carry end-to-end tests on docker #10498 (@fcollonval)
Add language to MarkdownCodeBlocks' "should find a block with a language" spec #10495 (@ainzzorl)
Add Verdaccio helper to prepare for releaser #10494 (@jtpio)
Make highlighted line in debugger readable #10479 (@krassowski)
Move filebrowser shortcuts to settings #10466 (@fcollonval)
upgrade to galata 3.0.11-2 #10453 (@mbektas)
UI fix: clearer save message #10430 (@jess-x)
Interface pass on the name file dialog feature #10416 (@jtpio)
Split move cell test into 2 separate tests #10410 (@fcollonval)
Fix a bug since merging arrow navigation between buttons in Dialog (#10349) #10395 (@jahn96)
Handle updating dependencies without a semver range prefix #10393 (@jasongrout)
Restore padding on main dock panel #10390 (@fcollonval)
Add the ui-tests folder to the labeler #10386 (@jtpio)
Fix completer on cell example #10382 (@hbcarlos)
UI Tests: Update reference screenshots #10372 (@jtpio)
Remove mode from the JupyterFrontEnd.IShell interface #10368 (@jtpio)
Allow bumpversion to work with patch #10360 (@blink1073)
Start testing the debugger with Galata #10359 (@jtpio)
Remove unused IMainMenu dependency #10356 (@jtpio)
tagging deprecated completer APIs #10348 (@dharmaquark)
Fix master UI test #10345 (@fcollonval)
Add linter rule for sorting import #10344 (@fcollonval)
Update labeler to use the documentation label for docs #10336 (@jtpio)
Fix clean-package and correct toc extension #10332 (@fcollonval)
Automated UI testing using Galata #10331 (@mbektas)
Add permissions to the labeler workflow #10324 (@jtpio)
Fix labeler workflow #10322 (@jtpio)
fix: remove the 3-second startup delay of the kernel connection #10321 (@mariobuikhuizen)
Update ws dependency #10316 (@jtpio)
Fix remote-caret rendering #10315 (@dmonad)
Add Plugin wrapper for "Open in New Browser Tab" so it can be disabled. #10311 (@robertpyke)
Minor code style pass on yprovider.ts #10308 (@jtpio)
Update labeler and add auto assign to PRs #10306 (@goanpeca)
Fix focus accept button on dialog unit test #10303 (@fcollonval)
Add Yjs as a singleton package #10301 (@dmonad)
Remove various tab indices #10289 (@marthacryan)
Add the new docprovider-extension to the labeler #10288 (@jtpio)
FileBrowserModel: Allow for overwriting _onFileChanged #10286 (@martinRenou)
Enable real time collaboration on the dev Binder #10258 (@jtpio)
Add the new packages to the labeler #10257 (@jtpio)
Update enhancement tag in the issue template #10253 (@jtpio)
DirListing: Make some methods protected #10247 (@martinRenou)
FileBrowserModel: Make some methods protected #10246 (@martinRenou)
FileBrowser: Make listing and crumbs accessible to subclasses #10245 (@martinRenou)
Fix Shutdown Error in Test App #10240 (@afshin)
Remove tabmanager-extension from packages list #10232 (@krassowski)
Re-enable splice source tests #10230 (@jtpio)
DirListing: Make Renderer's private method protected #10224 (@martinRenou)
Update to sanitize-html~=2.3.3 #10220 (@jtpio)
Update to url-parse~=1.5.1 #10219 (@jtpio)
Remove runtime dependency on jupyter_packaging #10217 (@jtpio)
Replaced ... with ellipses unicode character in .ts files #10208 (@yasmin-bb)
add tooltip on cell type dropdown #10182 (@fcollonval)
Update the mock packages to jupyter-packaging 0.10 #10177 (@jtpio)
clean up unused signal in notebook search #10169 (@jess-x)
Debugger: show callstack clearer with names/ids #10162 (@mlucool)
Fix Permissions of Labeler Workflow #10141 (@jtpio)
Add Required Permission to CodeQL Workflow #10138 (@afshin)
Clean up workflow permissions #10136 (@afshin)
include all default*.json in @jupyterlab/testutils distributions #10132 (@bollwyvl)
Clean up package integrity #10122 (@jtpio)
Update employer name #10120 (@mbektas)
Export createRendermimePlugin from @jupyterlab/application #10117 (@jtpio)
Upgrade to Jupyter Packaging 0.9 #10096 (@jtpio)
Pulled notebook export UI into separate extension so it can be disabled easily #10094 (@DianeHu)
Add a clarifying comment for the download plugin. #10092 (@jasongrout)
Move the about help dialog to its own plugin #10089 (@jtpio)
Move "Launch Classic Notebook" to its own plugin #10086 (@jtpio)
Add the celltags extension to the app example #10078 (@jtpio)
Move the main application commands to a separate plugin #10073 (@jtpio)
Pull out filebrowser context menu download UI into separate plugin so it can be disabled easily #10066 (@DianeHu)
Pull docmanager download UI into separate plugin so that it can be disabled easily #10065 (@DianeHu)
Add the toc extension to the app example #10053 (@jtpio)
Remove buffer dependency from @jupyterlab/apputils #10050 (@jtpio)
Use blobs to set the svg source of an image in the image viewer #10029 (@jasongrout)
Show app.name in the tab title #10023 (@jtpio)
Add document name and workspaces to title Bar #10002 (@jess-x)
Loosen pin on jupyter-packaging #9998 (@afshin)
Move js-services to the flaky CI workflow #9987 (@jtpio)
API for custom toolbars/headers in Notebook widgets #9984 (@fasiha)
Use Playwright and Test All Browsers #9977 (@afshin)
Update console message for when fullMathjaxUrl is missing from the page config #9970 (@jtpio)
Update react-json-tree to 0.15.0 #9949 (@jtpio)
changing ... to ellipsis character in json find #9946 (@RodyLipson)
Update @lumino dependencies #9939 (@marthacryan)
Move the code consoles functionalities for the notebook to a separate plugin #9934 (@jtpio)
Remove the explicit path to the mock extension used in the integrity script #9921 (@jtpio)
Automatically close “answered” issues if they have no activity for 30 days #9920 (@jasongrout)
Added Pipfile to .gitignore #9893 (@palewire)
Added Forum to help menu. Fixes #8678 #9892 (@palewire)
Make the markdown plugin more reusable #9876 (@jtpio)
Turn HTML sanitizer into a plugin #9873 (@ohrely)
Cleanup unused Python imports #9864 (@jtpio)
Update @lumino dependencies #9857 (@jtpio)
Move the cloned outputs to a separate plugin #9845 (@jtpio)
Add icon to Create Console for Editor #9843 (@jtpio)
Add Markdown icon for Show Markdown Preview #9840 (@krassowski)
Enable Caching in Production Minimized Mode #9833 (@afshin)
Clean up Release Scripts and Test in CI #9821 (@afshin)
Update CI script timeouts #9814 (@afshin)
Update MANIFEST.in to include package_data files. #9780 (@jasongrout)
Add hash to webpack requests to enable caching #9776 (@afshin)
Updates the locking configuration #9754 (@jasongrout)
Use get_package_url from jupyterlab-server #9743 (@krassowski)
Add link for prebuilt extensions too #9702 (@flying-sheep)
Enable jupyter labextension build/watch to work for custom jupyterlab distributions #9697 (@jasongrout)
Move flaky tests to a separate workflow on CI #9677 (@jtpio)
Make the filebrowser plugins more reusable #9667 (@jtpio)
fix: use process/browser module as real polyfill #9636 (@maartenbreddels)

Documentation improvements

Add alt attributes for test docs sprint #10670 (@isabela-pf)
Add some upgrade notes to JupyterLab 3.1 #10654 (@fcollonval)
fixes doc string for toc syncCollapseState setting #10639 (@andrewfulton9)
Mention prebuilt extensions in README and docs #10604 (@krassowski)
replace OS X -> macOS #10599 (@partev)
Fix documentation for selectionExecuted signal (copy-paste error) #10579 (@krassowski)
Documentation for Real Time Collaboration #10547 (@hbcarlos)
Update docs #10543 (@hbcarlos)
Fix a few typos, camelCase some privates #10524 (@krassowski)
Add ipykernel to the debugger user docs #10512 (@jtpio)
Fix two links in documentation #10421 (@blink1073)
Allow theme and style css #10381 (@jasongrout)
Revert visual regression #10376 (@fcollonval)
Build context menu from settings for easy customization #10373 (@fcollonval)
Fix listing documentation #10367 (@fcollonval)
add UI testing section to contributor documentation #10364 (@mbektas)
Add missing docstrings #10357 (@jtpio)
changed Javsacript to Javascript #10333 (@Ashish-15s)
Fix clean-package and correct toc extension #10332 (@fcollonval)
Automated UI testing using Galata #10331 (@mbektas)
fix: typo in getting_started/faq #10330 (@manavendrasen)
Fix documentation #10323 (@davidbrochart)
Update Maintainer List #10300 (@blink1073)
Add note about symlink activation on Windows. #10292 (@fcollonval)
Add changelog entry for 3.0.16 #10267 (@blink1073)
Update documentsearch description in package.json #10265 (@jtpio)
Build menus from settings #10254 (@fcollonval)
Add changelog entry for 3.0.15 release #10238 (@blink1073)
Update contribution docs to show how to rebuild on change #10204 (@martinRenou)
Remove installing notebook from the contributing guide #10200 (@jtpio)
Improve prebuild extension docs #10190 (@hbcarlos)
fix(docs): corrects typo in ui-components README #10155 (@plan-do-break-fix)
Update packaging commands in the extension tutorial #10104 (@jtpio)
Mention mamba as a means to install JupyterLab #10093 (@SylvainCorlay)
Fix changelog links for 3.0.13 #10085 (@blink1073)
Update changelog in master for 3.0.14 #10082 (@blink1073)
Fix typo in ui-components's README #10062 (@martinRenou)
Fix changelog links #10060 (@blink1073)
Forward port changelog entries #10058 (@blink1073)
chore: update extension_tutorial #10026 (@0618)
Add Ability Use Source Directories in App Dir #10024 (@afshin)
Use check-links-ignore to ignore pulls and issues #10012 (@afshin)
Clarify where the overrides.json file should be in the docs #9989 (@jasongrout)
Move Changelog to Standard Location #9944 (@afshin)
Point the CI badges in the README to master branch #9919 (@blink1073)
Update changelog for 3.0.9 and 3.0.10 #9917 (@jasongrout)
Update link to JupyterLab Demo Binder #9872 (@afshin)
Add link to source extension list of metadata in prebuilt extensions #9860 (@bsyouness)
fix release_test, squash all non-eslint CI warnings #9854 (@bollwyvl)
Convert Changelog to Markdown #9846 (@afshin)
Update changelog for 3.0.8 #9805 (@blink1073)
Link to file with lab CSS variables #9788 (@yuvipanda)
Add "author_name" to cookiecutter #9783 (@janjagusch)
Update extension_dev.rst #9728 (@stadlerb)
Update changelog for 3.0.7 #9722 (@blink1073)
Remove outdated note on ipywidgets #9707 (@krassowski)
Update notebook toolbar example docs #9705 (@blink1073)
DOC: Make code block background less ugly #9413 (@mgeier)

Contributors to this release

(GitHub contributors page for this release)

v3.0

See the JupyterLab 3.0 milestone on GitHub for the full list of pull requests and issues closed.

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Package last updated on 27 Jul 2021

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