5.11.0

What's Changed

Fixes

• SplDoublyLinkedList's index is always int by @kamil-tekiela in #9736
• Fix string negation to never by @klimick in #9743
• Fix ParadoxicalCondition with complex match expression by @klimick in #9739
• Fix invalid cast for templated class-string by @klimick in #9738
• Fix OverriddenPropertyAccess error message by @edsrzf in #9740
• Ignore nullable return form SimpleXMLElement::addChild() by @greg0ire in #9745

Full Changelog: 5.10.0...5.11.0