Desdeo-vis

* Automatically update version number for Sphinx
* Upgrade jupyter-widgets, fixing security warning
* Add cylinder notebook
* Add API documentation
* Show notebooks on readthedocs
* Build scripts as part of docs building process
* Switch from vega to vega-lib
* Change from using vega to vega-lib
* Display preference values for <, =, >
* Add parplot widget
* Fix notebook paths in various places

* Fix notebook packaging once and for all!

* Update NIMBUS river pollution notebook
* Move notebooks to package so they get installed properly

* Add LICENSE
* Fix up NimbusPref side panel styling

* Added notebooks to release
* Removed broken jupyterlab extension

* First release