* $wgProfileOnly is now deprecated; set the log file in
$wgDebugLogGroups['profileoutput'] to replace it.
* $wgMaxBacklinksInvalidate was removed; use $wgJobBackoffThrottling instead
+* Deprecated ResourceLoaderGetStartupModules hook.
=== New features in 1.23 ===
* ResourceLoader can utilize the Web Storage API to cache modules client-side.