setting in the relevant section of $wgLBFactoryConf.
* User::newSystemUser() may be used to simplify the creation of passwordless
"system" users for logged actions from scripts and extensions.
-* $wgAPIMaxLagThreshold was added to limit bot changes when databases lag
- becomes too high.
==== External libraries ====
* ProfilerOutputUdp was removed. Note that there is a ProfilerOutputStats class.
* WikiPage::doDeleteArticleReal() and WikiPage::doDeleteArticle() now
ignore the 2nd and 3rd arguments (formerly $id and $commit).
+* Removed "loaderScripts" option from ResourceLoaderFileModule class.
+* Removed ORM-like wrapper added in 1.20.
== Compatibility ==