Update CHANGELOG

Author: Universal-Omega

CHANGELOG.md

@@ -1,3 +1,7 @@
+# Version 4.0.4
+* If the `alwaysCacheResults` config is enabled, then ignore a decreased `cacheperiod`. `cacheperiod` will still work for increasing the cache but it can not be decreased. This is to prevent bypassing the config by setting a very low `cacheperiod`.
+* Fixed `namespace` and `notnamespace` to only skip invalid namespaces and not prevent any from being used if any invalid namespace is found at all.
+
 # Version 4.0.3
 * Fixes performance issue caused by version 4.0.1.
 * Replaced class namespace deprecated in MediaWiki 1.44.