Release 4.4.0 (plotly#1992)

* Bump versions of jupyterlab extensions to 1.4.0
* Update versions in CHANGELOG and getting-started.md for 4.4.0 release

Release 4.4.1 (plotly#1994)

* 4.4.1 CHANGELOG, README, requirements.txt updates

Release 4.4.0 (plotly#1992)

* Bump versions of jupyterlab extensions to 1.4.0
* Update versions in CHANGELOG and getting-started.md for 4.4.0 release

Release 4.3.0 (plotly#1894)

* Bump plotly.js to 1.51.1 in jupyterlab-plotly extension
* Update CHANGELOG for 4.3.0
* Bump plotlywidget and jupyterlab-plotly versions to 1.3.0
* Update versions in README

Release 4.3.0 (plotly#1894)

* Bump plotly.js to 1.51.1 in jupyterlab-plotly extension
* Update CHANGELOG for 4.3.0
* Bump plotlywidget and jupyterlab-plotly versions to 1.3.0
* Update versions in README

Update CHANGELOG and README for version 4.2.1

Release 4.2.0 (plotly#1823)

* Added 4.2.0 CHANGELOG entry
* Update README to version 4.2.0
* Bump extension versions

Release 4.2.0 (plotly#1823)

* Added 4.2.0 CHANGELOG entry
* Update README to version 4.2.0
* Bump extension versions

CHANGELOG typo

CHANGELOG typo