Here are some highlights of what is in this release. See the JupyterLab 1.1.0 milestone on GitHub for the full list of pull requests and issues closed.

User-facing changes

jupyter lab build now has a --minimize=False option to build without minimization to conserve memory and time (#6907)
Fix workspace reset functionality (#7106, #7105)
Restore behavior of the "raises-exception" cell tag (#7020, #7015)
Add settings to override theme font sizes (#6926)
Accept query parameter to optionally change file browser location (#6875)
Pressing escape in the console should switch out of edit mode (#6822)
Fix file browser downloads in Google Chrome (#6686)
Make it possible to override the default widgets to view a file (#6813, #4048)
Support installing multiple versions of the same extension (#6857)
Support JupyterHub server name for JupyterHub 1.0 (#6931)
Add docs to help users diagnose issues before creating them (#6971)
The JupyterLab conda-forge package is now a noarch package. If you are using JupyterLab with notebook version 5.2 or earlier, you may need to manually enable the JupyterLab server extension. See the issue for more details (#7042)

For developers

Expose install_kernel for tests so that outside projects can better use the testing framework (#7089)
Fix comm_info_request content to conform to the Jupyter message specification in a backwards-compatible way (#6949, #6947)
Add yarn package resolution to build to constrain core package versions to patch semver ranges (#6938)
Make handling comm messages optional in a kernel connection. (#6929)
Expose icon svg to theme css (#6034, #7027)
Expose convenience functions for open dialogs (#6366, #6365)
Add debug messages to possible kernel messages (#6704)
Add server side coreconfig object (#6991)

Bug fixes

Handle errors that occur during kernel selection (#7094)
Fix escaping issues for page config and other template variables (#7016, #7024, #7061, #7058, #6858)
Require jinja2 2.10+ to fix escaping issues (#7055, #7053)
Increase the search debounce from 100ms to 500ms to increase incremental search responsiveness in large documents (#7034)
Fix vega downloads and download urls in general (#7022, #7017, #7098, #7047)
Do not complain in the build about duplicate or optional packages (#7013)
Fix contextual help layout for R help (#6933, #6935)