Leaflet Markercluster (for D8) included as a submodule (standalone one deprecated)

Due the close integration between this Leaflet module and its Leaflet Markercluster js library, the lasting lack of support and maintenance for Drupal 8 of the original stand alone Leaflet Markecluster Drupal project, and the need to implement conditional enabling and settings of Leaflet Markercluster js library additional options both for the Leaflet Formatter and the Leaflet Map View Style,

since 8.x-1.2, Leaflet Markercluster (leaflet_markercluster) module has been embedded into Leaflet module, as submodule of it(located into the module subfolder).

Thus, for selective and advanced Leaflet Markercluster functionalities (both for the Leaflet Formatter and the Leaflet Map View Style),
you can (and should) stop using the previous stand alone Leaflet Markecluster Drupal project (deprecated), and use this Leaflet Markercluster submodule instead.