Last two years a lot of improvements were added and a some minor fixes where done.
The global settings for the map(s) can be done on the settings page and since the yaml_editor module has a D10 version it was re-introduced to improve settings UX.
* Added a GGL map markers field to manage markers on whatever entity
* Added "Items" option to a "collection" so that marker items can be embedded directly within the render array
* Added twig function gglMap() to embed a GGL map directly in a twig template
* Next (last?) round of coding standards
* Adding descriptions and comments to classes, properties and methods.
* Little fix on the position of a marker when content loaded via an url
