+* $wgUseCdn, $wgCdnServers, $wgCdnServersNoPurge, and $wgCdnMaxAge – These four
+ CDN-related config variables have been renamed from being specific to Squid –
+ they were previously $wgUseSquid, $wgSquidServers, $wgSquidServersNoPurge, and
+ $wgSquidMaxage respectively. This aligns them with the related existing
+ variable $wgCdnMaxageLagged. The previous configuration variable names are
+ deprecated, but will be used as the fall back if they are still set.
+ Note that wgSquidPurgeUseHostHeader has not been renamed, as it is deprecated.