Jupyter-rfb

What's Changed

Fixed the version issue that was introduced in the previous (broken) release.

* Restore version of js module by almarklein in https://github.com/vispy/jupyter_rfb/pull/90

*Warning: this release is broken, use 0.4.4+ instead.*

What's Changed
* specify TraitError in test by kushalkolar in https://github.com/vispy/jupyter_rfb/pull/85
* allow setting the cursor by kushalkolar in https://github.com/vispy/jupyter_rfb/pull/84
* Use tuples for buttons and modifiers (instead of list) by almarklein in https://github.com/vispy/jupyter_rfb/pull/88


**Full Changelog**: https://github.com/vispy/jupyter_rfb/compare/v0.4.2...v0.4.3

What's Changed

* Better performance by avoiding base64-encoding image data by manzt in https://github.com/vispy/jupyter_rfb/pull/76
* Update event spec by almarklein in https://github.com/vispy/jupyter_rfb/pull/78
* Update examples to new version of pygfx by almarklein in https://github.com/vispy/jupyter_rfb/pull/80
* Add grid example by almarklein in https://github.com/vispy/jupyter_rfb/pull/82

* Drop python 3.7 and 3.8 by kushalkolar in https://github.com/vispy/jupyter_rfb/pull/71
* Restrict widget size by almarklein in https://github.com/vispy/jupyter_rfb/pull/70

* Fix that `jupyter_rfb` was broken for the latest ipywidgets by skapin in https://github.com/vispy/jupyter_rfb/pull/64
* Make things work on other notebook implementations by almarklein in https://github.com/vispy/jupyter_rfb/pull/67
* Update examples by almarklein in https://github.com/vispy/jupyter_rfb/pull/66

* Docs on wheel event.
* Pin versions to stricter upstream libs because the new ipywidgets requires changes.