- [x] [Add context for statements](https://gerrit.wikimedia.org/r/#/c/369420) + [tests](https://gerrit.wikimedia.org/r/#/c/369420)
- [ ] [Add support for new API format to gadget](https://gerrit.wikimedia.org/r/373323)
- [x] [Add config for switching to new API format](https://gerrit.wikimedia.org/r/#/c/374788/)
- [x] [Document new API format on MediaWiki wiki](https://www.mediawiki.org/w/index.php?title=Wikibase/API&diff=2545700&oldid=2542068)
- [ ] Update with switch date as soon as that’s decided
- [x] Switch to new API format on wikidata-constraints
- [ ] Announce new API format (breaking change), including pointer to wikidata-constraints as test system
- [ ] Switch to new API format on test.wikidata.org… is this a hard requirement? SIP says that “[t]he change will //typically// be available for testing at least two weeks before deployment on https://test.wikidata.org/” (emphasis mine), but constraints aren’t even configured on test.wikidata.org as far as I know, so is it acceptable to offer wikidata-constraints as the sole test system instead?
- [ ] Switch to new API format on Wikidata