Wikidata deployment

Changes

 * Machine readable versions (in various formats) of Wikibase entities will be advertised in their page heads as alternate link. Be aware that static html pages served from varnish will not update immediately. (T96298)
 * Switch from DataModel 2.x to 3.x (217885), causes small breaking API change.
 * Small breaking DOM change: Wikibase no longer adds its own  but uses MediaWiki's default .firstHeading element. (T93534)
 * Small breaking DOM change: Add heading before sitelinks section (203874)

Deployment notes

 * 203681 bumps the parser cache epoch for entities.

Changes

 * Adjust time formatter heuristics for calendar display. 75272
 * Include incoming redirects in RDF output of Special:EntityData T69033 and RDF dumps T93767

Changes

 * Improvements in handling of time values. T87574 T96137
 * New special page to list properties by data type. T55618
 * Drop redundant sitelinks / attempt to resolve site link conflicts when merging items. T85347
 * Add redirect info to wbgetentities api result. T88902

Bug fixes

 * Fix parsing of quantities with scientific notation. T67436

Changes

 * Add a from=… parameter to for arbitrary access in clients. (for wikis that already have arbitrary access enabled) T70029
 * Wikibase now ignores capitalization for label and description conflicts. T73785
 * Consider number of labels (in addition to number of site links) in entity suggester sorting of suggestions. T94404

Bug fixes

 * Fix term box when invalid language code in babel is set T94835
 * Show correct label in copyright message on special pages T50983, T68499
 * Fix "other languages" box displaying an older revision T90893

Older branches

 * /1.25
 * /1.24
 * /1.23