* $wgSkipSkin, which has been replaceable by $wgSkipSkins since 2005 (r9249), is
now formally deprecated.
* Removed deprecated $wgDisabledActions as it is hardly used anywhere.
+* $wgRateLimitLog has been deprecated and replaced by
+ $wgDebugLogGroup['ratelimit'].
=== New features in 1.23 ===
* ResourceLoader can utilize the Web Storage API to cache modules client-side.