<maplink> is way more user-friendly than the current link to GeoHack. If it's possible, <mapframe> would be even more nice. The AuthorityControl gadget or Wikibase source code should be adjusted to use this feature or some seperate gadget should be created.
- valueview: always re-render
- Wikibase: use Kartographer
- [Wikibase: add SnakFormat](https://gerrit.wikimedia.org/r/472061)
- Wikibase: add verbose preview format
- [WikibaseLexeme: use SnakFormat](https://gerrit.wikimedia.org/r/472674)
- Kartographer: add function
- Wikibase: use function
- Wikibase: bump valueview version
- Wikibase: update comment