* Hooks ArticleViewCustom, EditPageGetDiffText and ShowRawCssJs (deprecated in 1.21)
were removed.
* Class RevisiondeleteAction (deprecated in 1.25) was removed.
+* WikiPage::prepareTextForEdit() (deprecated in 1.21) was removed.
+* WikiPage::getText() (deprecated in 1.21) was removed.
+* Article::fetchContent() (deprecated in 1.21) was removed.
== Compatibility ==