formatted as specified by the error formatter parameters.
* action=compare can now handle arbitrary text, deleted revisions, and
returning users and edit comments.
+* (T164106) The 'rvdifftotext', 'rvdifftotextpst', 'rvdiffto',
+ 'rvexpandtemplates', 'rvgeneratexml', 'rvparse', and 'rvprop=parsetree'
+ parameters to prop=revisions are deprecated, as are the similarly named
+ parameters to prop=deletedrevisions, list=allrevisions, and
+ list=alldeletedrevisions. Use action=compare, action=parse, or
+ action=expandtemplates instead.
=== Action API internal changes in 1.30 ===
-* …
+* ApiBase::getDescriptionMessage() and the "apihelp-*-description" messages are
+ deprecated. The existing message should be split between "apihelp-*-summary"
+ and "apihelp-*-extended-description".
+* (T123931) Individual values of multi-valued parameters can now be marked as
+ deprecated.
=== Languages updated in 1.30 ===
MediaWiki supports over 350 languages. Many localisations are updated