instead. The setTags() method was overriding the tags, addTags() doesn't
override, only adds new tags.
* Block::isValid is deprecated, since it is no longer needed in core.
+* Calling Maintenance::hasArg() as well as Maintenance::getArg() with no
+ parameter has been deprecated. Please pass the argument number 0.
=== Other changes in 1.33 ===
* (T201747) Html::openElement() warns if given an element name with a space