Bump to 0.23.1 (jupyterlab#825)

* Bump to 0.23.1

* Bump python version

Merge pull request jupyterlab#821 from fcollonval/bump-version

Bump to 0.23.0

Merge pull request jupyterlab#811 from fcollonval/master

Bump to 0.22.3

Merge pull request jupyterlab#808 from fcollonval/bump-version

Bump to 0.22.2

bump to 0.22.1 (jupyterlab#797)

* bump to 0.22.1

* Bump to 0.22.1

* test against python 3.9

Hide overflow on focus (jupyterlab#792)

* Bump to 0.22.0

* Update .gif

* Fix overflow when clicking on the latest file in history

Bump to 0.21.1 (jupyterlab#760)

Bump to 0.21.0 (jupyterlab#755)

Bump to 0.11.0 (jupyterlab#756)

Bump to 0.11.0rc1