Version 4.2.1:
* New option to Add checkbox to choose single WMS layer loading, contribution
from @ghtmtt
* Fix loading the Dataviz HTML template from a configuration file
* Do not make the "Overview" group mutually exclusive
* Avoid a Python error if the maximum scale is too big
* Fixing some signals about the Lizmap Web Client version
* Check project CRS if the projection has inverted axes and 3.7.0 <= LWC <=
3.7.3
Version 4.2.0:
* Add two new checks :
* layers missing from the WFS
* fields missing from the WFS
* Remove all mentions to Stamen tiles which was removed in October 2023
* Remove the external Lizmap layer feature which was deprecated since 2019
* If LWC 3.7, disable the legacy checkbox "Add empty base layer"
* Minor UX improvements
Version 4.1.8:
* Improve the workflow when a new version is published
* Some fixes about the detected version of Lizmap Web Client
* Improve the error message when incomplete CFG is being saved
* Enable more widgets when the layer or the group is located in `baselayers`
