Just the subfeatures which cause no behavior change:
- Kartotherian services.conf.versioned_maps is already defaulting to true. Nothing to deploy.
- Enable the mapdata versioned API: $wgKartographerVersionedMapdata
This can be tested with specially-constructed URLs:
- mapdata API will show non-null data for https://en.wikipedia.org/w/api.php?action=query&prop=mapdata&revids=1054519717&mpdgroups=_1d6da03006396239d1c9397df81cd4d3bfaba47f
- Map will include annotations: https://maps.wikimedia.org/img/osm-intl,8,53.505,-0.126,300x300.png?lang=en&domain=en.wikipedia.org&title=User%3AAdamw%2Fsandbox&revid=1054519717&groups=_1d6da03006396239d1c9397df81cd4d3bfaba47f
(a pale yellow marker should be rendered)