RELEASE-NOTES-1.33

   1 = MediaWiki 1.33 =
   2
   3 == MediaWiki 1.33.0-PRERELEASE ==
   4
   5 THIS IS NOT A RELEASE YET
   6
   7 MediaWiki 1.33 is an alpha-quality branch and is not recommended for use in
   8 production.
   9
  10 == Upgrading notes for 1.33 ==
  11 1.33 has several database changes since 1.32, and will not work without schema
  12 updates. Note that due to changes to some very large tables like the revision
  13 table, the schema update may take quite long (minutes on a medium sized site,
  14 many hours on a large site).
  15
  16 Don't forget to always back up your database before upgrading!
  17
  18 See the file UPGRADE for more detailed upgrade instructions, including
  19 important information when upgrading from versions prior to 1.11.
  20
  21 Some specific notes for MediaWiki 1.33 upgrades are below:
  22
  23 * Some external link searches will not work correctly until update.php (or
  24   refreshExternallinksIndex.php) is run. These include searches for links using
  25   IP addresses, internationalized domain names, and possibly mailto links.
  26 * If you ran migrateActors.php using an older version of MediaWiki and want to
  27   run your wiki with $wgActorTableSchemaMigrationStage SCHEMA_COMPAT_READ_OLD,
  28   note that log_search rows needed to find revision deletions by target user
  29   were incorrectly deleted. See T215464 for details.
  30 * If revision deletions were performed when the wiki was configured with
  31   $wgActorTableSchemaMigrationStage SCHEMA_COMPAT_WRITE_BOTH and without
  32   migrateActors.php having been run, the log_search table may contain rows with
  33   empty values for "target_author_actor" which will prevent log searches for
  34   revision deletions by target user from finding those log entries. These rows
  35   may be corrected by (re-)running migrateActors.php.
  36
  37 For notes on 1.32.x and older releases, see HISTORY.
  38
  39 === Configuration changes for system administrators in 1.33 ===
  40 ==== New configuration ====
  41 * $wgEnablePartialBlocks – This enables the Partial Blocks feature, which gives
  42   accounts with block permissions the ability to block users, IPs, and IP ranges
  43   from editing specific pages, while allowing them to edit the rest of the wiki.
  44   It is a temporary setting for gradual enablement, current default to `false`,
  45   and will be set to `true` and then removed once initial development completes.
  46
  47 ==== Changed configuration ====
  48 * $wgChangeTagsSchemaMigrationStage (T193868) — This temporary setting, added in
  49   MediaWiki 1.32, now defaults to MIGRATION_NEW instead of MIGRATION_WRITE_BOTH.
  50 * $wgPasswordPolicy – There is a new password policy to check that the account's
  51   password is not in the large blacklist. This is enabled by default for the
  52   built-in user groups bureaucrat, sysop, interface-admin, and bot. To configure
  53   this for other user groups, set the `PasswordNotInLargeBlacklist` flag `true`.
  54 * wgPasswordDefault – There is a new password type configuration using Argon2
  55   password hashing (which requires PHP 7.2 and above). It's designed to resist
  56   timing attacks, and (on systems with PHP 7.3+) GPU hacking; if you configure
  57   argon2 to be used, by default, it will automatically choose the best available
  58   algorithm depending on which version of PHP you have available. To use this,
  59   you can set `$wgPasswordDefault = 'argon2';`.
  60
  61 ==== Removed configuration ====
  62 * $wgTagStatisticsNewTable (T199334) — This temporary setting, added in
  63   MediaWiki 1.32, has now been removed. When loading Special:Tags, MediaWiki
  64   will now always use the `change_tag_def` instead of the `change_tag` table.
  65 * $wgUseTidy, $wgTidyBin, $wgTidyConf, $wgTidyOpts, $wgTidyInternal, and
  66   $wgDebugTidy – These options, all deprecated since 1.26, have now all been
  67   removed, as MediaWiki now always tidies user output. The $wgTidyConfig setting
  68   remains only for experimental features and debugging, and should not be used.
  69 * $wgEnableParserCache – This setting has been deprecated since 1.26, has now
  70   been removed. If you still desire to disable the parser cache, instead you can
  71   set `$wgParserCacheType = CACHE_NONE;`.
  72 * $wgCommentTableSchemaMigrationStage – This temporary migration setting has now
  73   been removed. Code finding it unset should treat it as being MIGRATION_NEW.
  74 * $wgAuth – This old setting, deprecated in 1.27, has been removed as part of
  75   the removal of AuthPlugin.
  76 * $wgSitesCacheFile – This configuration was introduced in 1.25 with the intent
  77   to allow sites to configure a file in which to cache the SiteStore database
  78   table, but it was never used. SiteStore already caches its information by
  79   default using BagOStuff (e.g. Memcached or APC).
  80 * $wgClockSkewFudge – This setting was used by User.php to let sites adjust by
  81   how much MediaWiki would fudge when trying to minimize the chances of a
  82   user.user_touched database update to the "current" timestamp being before the
  83   value already there (e.g. due to clock skew between different servers). This
  84   is no longer a problem, because the code now ensures the timestamp is always
  85   higher than the previous one. The writes are guarded with CAS logic (check
  86   and set), which prevents updates that would overlap.
  87 * $wgDBmysql5 (T196185) - This experimental setting, deprecated in 1.31, has
  88   been removed.
  89
  90 === New user-facing features in 1.33 ===
  91 * (T96041) __EXPECTUNUSEDCATEGORY__ on a category page causes the category
  92   to be hidden on Special:UnusedCategories.
  93 * (T210814) SVGs are now by default displayed in wiki language on image
  94   pages.
  95 * Special:CreateAccount now warns the user if their chosen username has to be
  96   normalized.
  97 * (T205040) Multilingual images are now be displayed in the current parse
  98   language where available.
  99 * Special:ActiveUsers will no longer filter out users who became inactive since
 100   the last time the active users query cache was updated.
 101 * (T215675) RecentChange and ManualLogEntry implement new Taggable interface.
 102 * (T215675) Added a hook, ManualLogEntryBeforePublish, to allow extensions
 103   to modify (example: add tags) log entries.
 104
 105 === New developer features in 1.33 ===
 106 * The AuthManagerLoginAuthenticateAudit hook has a new parameter for
 107   additional information about the authentication event.
 108 * TextContent::getText() was introduced as a replacement for
 109   Content::getNativeData() for text-based content models.
 110 * (T214706) LinksUpdate::getAddedExternalLinks() and
 111   LinksUpdate::getRemovedExternalLinks() were introduced.
 112 * (T213893) Added 'MaintenanceUpdateAddParams' hook
 113
 114 === External library changes in 1.33 ===
 115 ==== New external libraries ====
 116 * Added wikimedia/password-blacklist 0.1.4.
 117 * Added guzzlehttp/guzzle 6.3.3.
 118 * Added jakub-onderka/php-console-highlighter 0.3.2 explicitly (dev-only).
 119
 120 ==== Changed external libraries ====
 121 * Updated OOUI from v0.29.2 to v0.31.2.
 122 * Updated OOjs Router from pre-release to v0.2.0.
 123 * Updated moment from v2.19.3 to v2.24.0.
 124 * Updated wikimedia/xmp-reader from 0.6.0 to 0.6.2.
 125 * Updated wikimedia/scoped-callback from 2.0.0 to 3.0.0.
 126 * Updated wikimedia/ip-set from 1.2.0 to 2.0.1.
 127   * The deprecated IPSet\IPSet alias was removed, Wikimedia\IPSet must be
 128     used instead.
 129 * Updated qunitjs from 2.6.2 to 2.9.1.
 130 * Updated jquery-client from 2.0.1 to 2.0.2.
 131 * Updated psy/psysh from 0.9.6 to 0.9.9 (dev-only).
 132 * Updated nikic/php-parser from 3.1.3 to 3.1.5 (dev-only).
 133 * Updated pear/net_smtp from 1.8.0 to 1.8.1.
 134 * Updated cssjanus/cssjanus from 1.2.0 to 1.2.1.
 135 * Updated wikimedia/php-session-serializer from 1.0.6 to 1.0.7.
 136
 137 ==== Removed external libraries ====
 138 * (T219403) jquery.ui.spinner, deprecated since 1.31, was removed.
 139
 140 === Bug fixes in 1.33 ===
 141 * (T164211) Special:UserRights could sometimes fail with a
 142   "conflict detected" error when there weren't any conflicts.
 143 * (T216029) Chrome redirects to Special:BadTitle after editing a section with
 144   a non-Latin name on a page with non-Latin characters in title.
 145
 146 === Action API changes in 1.33 ===
 147 * (T198913) Added 'ApiOptions' hook.
 148 * The JSON formatversion=2 is no longer experimental.
 149 * Internal API errors (those with code beginning "internal_api_error") will
 150   include the exception class name in a data field named "errorclass".
 151   * Class names are not guaranteed to remain stable, and in particular database
 152     exceptions will now include the "Wikimedia\Rdbms\" prefix in the class name.
 153   * The code including an exception class name is deprecated. In the future,
 154     all internal errors will use code "internal_api_error".
 155 * (T212356) When using action=delete on pages with many revisions, the module
 156   may return a boolean-true 'scheduled' and no 'logid'. This signifies that the
 157   deletion will be processed via the job queue.
 158 * action=setnotificationtimestamp will now update the watchlist asynchronously
 159   if entirewatchlist is set, so updates may not be visible immediately
 160 * Block info will be added to "blocked" errors from more modules.
 161 * (T216245) Autoblocks will now be spread by action=edit and action=move.
 162
 163 === Action API internal changes in 1.33 ===
 164 * A number of deprecated methods for API documentation, intended for overriding
 165   by extensions, are no longer called by MediaWiki, and will emit deprecation
 166   notices if your extension attempts to use them:
 167   * ApiBase::getDescription() (deprecated in 1.25)
 168   * ApiBase::getParamDescription() (deprecated in 1.25)
 169   * ApiBase::getExamples() (deprecated in 1.25)
 170   * ApiBase::getDescriptionMessage() (deprecated in 1.30)
 171   Additionally, the  'APIGetDescription' and 'APIGetParamDescription' hooks have
 172   been removed, as their only use was to let extensions override values returned
 173   by getDescription() and getParamDescription(), respectively.
 174 * API error codes may only contain ASCII letters, numbers, underscore, and
 175   hyphen. Methods such as ApiBase::dieWithError() and
 176   ApiMessageTrait::setApiCode() will throw an InvalidArgumentException if
 177   passed a bad code.
 178 * ApiBase::checkTitleUserPermissions() now takes an options array as its third
 179   parameter. Passing a User object or null is deprecated.
 180 * The api-feature-usage log channel now has log context. The text message is
 181   deprecated and will be removed in the future.
 182
 183 === Languages updated in 1.33 ===
 184 MediaWiki supports over 350 languages. Many localisations are updated regularly.
 185 Below only new and removed languages are listed, as well as changes to languages
 186 because of Phabricator reports.
 187
 188 * (T203908) Added language support for Eastern Pwo (kjp).
 189 * (T213717) Fixed a translation error on Goan Konkani (gom-deva) translations
 190   for NS_TEMPLATE.
 191 * (T212221) Added $digitTransformTable for Santali (sat).
 192 * (T216479) Added language support for Saisiyat (xsy).
 193
 194 === Breaking changes in 1.33 ===
 195 * The parameteter $lang in DifferenceEngine::setTextLanguage must be of type
 196   Language. Other types are deprecated since 1.32.
 197 * Skin::doEditSectionLink requires type Language for the parameter $lang.
 198   The parameters $tooltip and $lang are mandatory. Omitting the parameters is
 199   deprecated since 1.32.
 200 * Language::truncate(), deprecated in 1.31, has been removed.
 201 * UtfNormal, deprecated in 1.25, was removed. Use UtfNormal\Validator directly
 202   instead.
 203 * (T197179) In OOUI HTMLForm fields, the parameters 'notice', 'notice-messages',
 204   and 'notice-message', which were deprecated in 1.32, were removed. Instead,
 205   use 'help', 'help-message', and 'help-messages'.
 206 * (T197179) HTMLFormField::getNotices(), deprecated in 1.32, was removed.
 207 * The "Parsoid v1" compatibility mappings in ParsoidVirtualRESTService and
 208   RestbaseVirtualRESTService, deprecated since 1.26, have been removed.
 209   Use the RESTBase v1 or Parsoid v3 API instead.
 210 * ParserOptions defaults 'tidy' to true now, since the untidy modes of the
 211   parser are being deprecated and ParserOptions::getCanonicalOverrides()
 212   has always been true at any rate.
 213 * Support for disabling tidy and external tidy implementations has been removed.
 214   This was deprecated in 1.32. The pure PHP Remex tidy implementation is now
 215   used and no configuration is necessary.
 216 * A number of deprecated methods for API documentation, intended for overriding
 217   by extensions, are no longer called by MediaWiki, and will emit deprecation
 218   notices if your extension attempts to use them:
 219   * ApiBase::getDescription() (deprecated in 1.25)
 220   * ApiBase::getParamDescription() (deprecated in 1.25)
 221   * ApiBase::getExamples() (deprecated in 1.25)
 222   * ApiBase::getDescriptionMessage() (deprecated in 1.30)
 223   Additionally, the  'APIGetDescription' and 'APIGetParamDescription' hooks have
 224   been removed, as their only use was to let extensions override values returned
 225   by getDescription() and getParamDescription(), respectively.
 226 * The authentication hooks 'AbortAutoAccount' 'AbortNewAccount', 'AbortLogin',
 227   'LoginUserMigrated', 'UserCreateForm', and 'UserLoginForm', all deprecated by
 228   the creation of AuthManager in 1.27, have been removed. This also means that
 229   the FakeAuthTemplate and LoginForm classes are removed, that FakeAuthTemplate
 230   is no longer passed into LoginSignupSpecialPage->getFieldDefinitions(), and
 231   that LoginSignupSpecialPage->getBCFieldDefinitions() is removed.
 232 * The 'jquery.localize' module, deprecated in 1.32, has been removed. Instead,
 233   use 'jquery.i18n'.
 234 * The hooks LanguageGetSpecialPageAliases and LanguageGetMagic, deprecated since
 235   1.16, have now been removed. Instead, use $specialPageAliases or $magicWords
 236   respectively in a $wgExtensionMessagesFiles file.
 237 * The following methods of the Preferences class, deprecated in 1.31, have been
 238   removed:
 239   * getSaveBlacklist()
 240   * loadPreferenceValues()
 241   * getOptionFromUser()
 242   * profilePreferences()
 243   * skinPreferences()
 244   * filesPreferences()
 245   * datetimePreferences()
 246   * renderingPreferences()
 247   * editingPreferences()
 248   * rcPreferences()
 249   * watchlistPreferences()
 250   * searchPreferences()
 251   * miscPreferences()
 252   * generateSkinOptions()
 253   * getDateOptions()
 254   * getImageSizes()
 255   * getThumbSizes()
 256   * validateSignature()
 257   * cleanSignature()
 258   * getTimezoneOptions()
 259   * filterIntval()
 260   * filterTimezoneInput()
 261   * getTimeZoneList()
 262 * mw.util.jsMessage(), deprecated in 1.20, was removed. Use mw.notify instead.
 263 * (T61113) User::EDIT_TOKEN_SUFFIX was removed. It was deprecated since 1.27.
 264 * The 'mediawiki.api' module aliases, deprecated in 1.32, have been removed.
 265   Specifically: mediawiki.api.category, mediawiki.api.edit,
 266   mediawiki.api.login, mediawiki.api.options, mediawiki.api.parse,
 267   mediawiki.api.upload, mediawiki.api.user, mediawiki.api.watch,
 268   mediawiki.api.messages, and mediawiki.api.rollback.
 269 * The 'jquery.byteLimit' module alias for 'jquery.lengthLimit',
 270   deprecated in 1.31, was removed.
 271 * Revision::fetchRevision(), deprecated in 1.28, was removed.
 272 * Class SquidUpdate, deprecated in 1.27, was removed.
 273 * Title->getSquidURLs(), deprecated in 1.27, was removed. Instead, use
 274   Title->getCdnUrls().
 275 * Title::escapeFragmentForURL(), deprecated in 1.30, was removed. Use
 276   Sanitizer::escapeIdForLink() or escapeIdForExternalInterwiki() instead.
 277 * Title->canTalk(), deprecated in 1.30, was removed. Instead, use
 278   Title->canHaveTalkPage().
 279 * Title's methods for site and user page related to CSS and JS, deprecated in
 280   1.31, were removed:
 281   * Title->isCssOrJsPage() — Use Title->isSiteConfigPage()
 282   * Title->isCssJsSubpage() – Use Title->isUserConfigPage()
 283   * Title->getSkinFromCssJsSubpage() – Use Title->getSkinFromConfigSubpage()
 284   * Title->isCssSubpage() – Use Title->isUserCssConfigPage()
 285   * Title->isJsSubpage() – Use Title->isUserJsConfigPage()
 286 * SiteSQLStore, deprecated in 1.27 and whose only method, ::newInstance(),
 287   would return the global SiteStore instance, has been removed. You can get to
 288   this via MediaWiki\MediaWikiServices::getInstance()->getSiteStore() directly.
 289 * Linker::formatSize, deprecated in 1.28, has been removed (with DummyLinker's).
 290   Instead, use Language->formatSize() with the relevant Language object.
 291 * Linker::formatTemplates, deprecated in 1.28, has been removed (along with the
 292   version in DummyLinker). You can use TemplatesOnThisPageFormatter directly.
 293 * EventRelayerGroup::singleton(), deprecated in 1.27, has been removed. You can
 294   use MediaWikiServices::getInstance()->getEventRelayerGroup() directly.
 295 * LinkCache->addLink(), deprecated in 1.27, has been removed. It is thought to
 296   be unused, and is distinct from OutputPage->addLink(), which remains.
 297 * JsonContent->getJsonData(), deprecated in 1.25, has been removed. Instead, use
 298   JsonContent->getData().
 299 * MWExceptionHandler::getLogId(), deprecated in 1.27, has been removed, as the
 300   exception ID is the same as the request ID, from WebRequest::getRequestId().
 301 * SearchEngine::getNearMatchResultSet(), deprecated in 1.27, has been removed.
 302   You can use SearchEngine::getNearMatcher() instead.
 303 * EmailNotification::updateWatchlistTimestamp, deprecated in 1.27, has been
 304   removed. Instead, use WatchedItemStore::updateNotificationTimestamp directly.
 305 * User::getGroupName() and ::getGroupMember(), both deprecated in 1.29, have
 306   been removed. Instead, please use UserGroupMembership::getGroupName() and
 307   UserGroupMembership::getGroupMemberName().
 308 * Backwards compatibility for setting wgSessionsInObjectCache to false or using
 309   wgSessionHandler, both of which were deprecated in 1.27 with the introduction
 310   of SessionManager, has been removed.
 311 * SessionManager::autoCreateUser, deprecated in 1.27, has been removed. Use
 312   MediaWiki\Auth\AuthManager::autoCreateUser instead.
 313 * The mw.libs.jpegmeta property, deprecated in 1.31, was removed.
 314   Use require( 'mediawiki.libs.jpegmeta' ) instead.
 315 * The mw.user.stickyRandomId() method, deprecated in 1.32, was removed.
 316   Use mw.user.getPageviewToken() instead.
 317 * Removed deprecated class property WikiRevision::$importer.
 318 * ResourceLoaderFileModule::readStyleFiles() now requires its $context
 319   parameter.
 320 * The ChangeList::insertArticleLink() method, that was deprecated in 1.27, has
 321   been removed.
 322 * MessageBlobStore::__construct() now requires its $rl parameter.
 323 * Second parameter to Sanitizer::escapeIdReferenceList() (deprecated in 1.31)
 324   has been removed.
 325 * The 'jquery.xmldom' module has been removed.
 326 * The 'jquery.mockjax' module has been removed.
 327 * The 'jquery.hidpi' module, deprecated in 1.32, has been removed.
 328 * AuthPlugin and related code, deprecated in 1.27, has been removed. Extensions
 329   should instead use AuthManager. The following no longer exist:
 330   * The AuthPlugin class itself and the related AuthPluginUser class and i18n
 331   * The AuthPluginSetup and AuthPluginAutoCreate hooks
 332   * The transitional wrapper classes AuthPluginPrimaryAuthenticationProvider,
 333     AuthManagerAuthPlugin, and AuthManagerAuthPluginUser.
 334   * The $wgAuth configuration setting and its use in Setup.php and unit tests
 335 * (T217772) The 'wgAvailableSkins' mw.config key in JavaScript, was removed.
 336 * Language::markNoConversion, deprecated in 1.32, has been removed. Use
 337   LanguageConverter::markNoConversion instead.
 338 * BagOStuff::modifySimpleRelayEvent() method has been removed.
 339 * ParserOutput::getLegacyOptions, deprecated in 1.30, has been removed.
 340   Use ParserOutput::allCacheVaryingOptions instead.
 341 * CdnCacheUpdate::newSimplePurge, deprecated in 1.27, has been removed.
 342   Use CdnCacheUpdate::newFromTitles() instead.
 343 * Handling of multiple arguments by the Block constructor, deprecated in 1.26,
 344   has been removed.
 345 * The translation of main page in Sardinian (sc) was changed from "Pàgina Base"
 346   to "Pàgina printzipale". Existing wikis using this content language need to
 347   move the main page or change the name through MediaWiki:Mainpage page.
 348 * wfSplitWikiID(), deprecated in 1.32, has been removed.
 349
 350 === Deprecations in 1.33 ===
 351 * The configuration option $wgUseESI has been deprecated, and is expected
 352   to be removed in a future release.
 353 * The configuration option $wgSquidPurgeUseHostHeader has been deprecated,
 354   and is expected to be removed in a future release.
 355 * The configuration options $wgFixArabicUnicode and $wgFixMalayalamUnicode,
 356   introduced in MW 1.17, have been deprecated.  These fixes will always be
 357   applied for Arabic and Malayalam in the future.  Please enable these on
 358   your local wiki (if you have them explicitly set to false) and run
 359   maintenance/cleanupTitles.php to fix any existing page titles.
 360 * The LegacyHookPreAuthenticationProvider class, deprecated since its creation
 361   in 1.27 as part of the AuthManager re-write, now emits deprecation warnings.
 362   This will help identify the issue if you added it to $wgAuthManagerConfig.
 363 * wfSplitWikiId() is now deprecated. Cache key generation should have the wiki
 364   domain ID as a key component and use makeGlobalKey().
 365 * (T202094) Title::getUserCaseDBKey() is deprecated; instead, please use
 366   Title::getDBKey(), which doesn't vary case.
 367 * User::getPasswordValidity() is now deprecated. User::checkPasswordValidity()
 368   returns the same information in a more useful format.
 369 * For Linker::generateTOC() and Linker::tocList(), passing strings or booleans
 370   as the $lang parameter was deprecated. The same applies to DummyLinker.
 371 * The PasswordPolicy 'PasswordCannotBePopular' has been deprecated. To
 372   follow best practices, it is reccommended to use 'PasswordNotInLargeBlacklist'
 373   instead which blacklists 100,000 commonly used passwords.
 374 * (T208862) Action::requiresUnblock() is now called from
 375   Title::getUserPermissionsErrors() and Title::userCan(). Previously, the method
 376   was only called in Action::checkCanExecute(). Actions should ensure that their
 377   requiresUnblock() returns the proper result (the default is `true`).
 378 * (T211608) The MediaWiki\Services namespace has been renamed to
 379   Wikimedia\Services. The old name is still supported, but deprecated.
 380 * (T155582) Content::getNativeData has been deprecated. Please use model-
 381   specific getters, such as TextContent::getText().
 382 * The class WebInstallerOutput is now marked as @private.
 383 * (T209699) The jquery.async module has been deprecated. JavaScript code that
 384   needs asynchronous behaviour should use Promises.
 385 * Password::equals() is deprecated, use verify().
 386 * BaseTemplate::msgWiki() and QuickTemplate::msgWiki() will be removed. Use
 387   other means to fetch a properly escaped message string or Message object.
 388 * (T126091) The 'ResourceLoaderTestModules' hook, which lets you declare QUnit
 389   testing code for your JavaScript modules, is deprecated. Instead, you can now
 390   use the new extension registration key 'QUnitTestModule'.
 391 * (T213426) The jquery.throttle-debounce module has been deprecated. JavaScript
 392   code that needs this behaviour should use OO.ui.debounce/throttle.
 393 * The mw.language.specialCharacters property from the
 394   'mediawiki.language.specialCharacters' module has been deprecated.
 395   Use require( 'mediawiki.language.specialCharacters' ) instead.
 396 * ChangeTags::purgeTagUsageCache() has been deprecated, and is expected to be
 397   removed in a future release.
 398 * Passing a User object or null as the third parameter to
 399   ApiBase::checkTitleUserPermissions() has been deprecated. Pass an array
 400   [ 'user' => $user ] instead.
 401 * (T211578) Block::prevents is deprecated. Use Block::isEmailBlocked,
 402   Block::isCreateAccountBlocked and Block::isUsertalkEditAllowed to get and set
 403   block properties; use Block::appliesToRight and Block::appliesToUsertalk to
 404   check block behaviour.
 405 * The api-feature-usage log channel now has log context. The text message is
 406   deprecated and will be removed in the future.
 407 * The FileBasedSiteLookup class has been deprecated. For a cacheable SiteLookup
 408   implementation, use CachingSiteStore instead.
 409 * ManualLogEntry::setTags() is deprecated, use ManualLogEntry::addTags()
 410   instead. The setTags() method was overriding the tags, addTags() doesn't
 411   override, only adds new tags.
 412 * Block::isValid is deprecated, since it is no longer needed in core.
 413
 414 === Other changes in 1.33 ===
 415 * (T201747) Html::openElement() warns if given an element name with a space
 416   in it.
 417 * The implementation of buildStringCast() in Wikimedia\Rdbms\Database has
 418   changed to explicitly cast. Subclasses relying on the base-class
 419   implementation should check whether they need to override it now.
 420 * BagOStuff::add is now abstract and must explicitly be defined in subclasses.
 421 * LinksDeletionUpdate is now a subclass of LinksUpdate. As a consequence,
 422   the following hooks will now be triggered upon page deletion in addition
 423   to page updates: LinksUpdateConstructed, LinksUpdate, LinksUpdateComplete.
 424   LinksUpdateAfterInsert is not triggered since deletions do not cause
 425   insertions into links tables.
 426
 427 == Compatibility ==
 428 MediaWiki 1.33 requires PHP 7.0.13 or later. Although HHVM 3.18.5 or later is
 429 supported, it is generally advised to use PHP 7.0.13 or later for long term
 430 support.
 431
 432 MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
 433 but support for them is somewhat less mature. There is experimental support for
 434 Oracle and Microsoft SQL Server.
 435
 436 The supported versions are:
 437
 438 * MySQL 5.5.8 or later
 439 * PostgreSQL 9.2 or later
 440 * SQLite 3.8.0 or later
 441 * Oracle 9.0.1 or later
 442 * Microsoft SQL Server 2005 (9.00.1399)
 443
 444 == Online documentation ==
 445 Documentation for both end-users and site administrators is available on
 446 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 447 for pages that explicitly state that their contents are in the public domain):
 448
 449        https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
 450
 451 == Mailing list ==
 452 A mailing list is available for MediaWiki user support and discussion:
 453
 454        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 455
 456 A low-traffic announcements-only list is also available:
 457
 458        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 459
 460 It's highly recommended that you sign up for one of these lists if you're
 461 going to run a public MediaWiki, so you can be notified of security fixes.
 462
 463 == IRC help ==
 464 There's usually someone online in #mediawiki on irc.freenode.net.