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## 1.26.0

**`(feat):`** Object types with an `xml` encoding (e.g. TwiML) now generate XML support: `to_xml`/`to_xml_element`,
`from_xml`/`from_xml_element`, fluent child builders (`response.say("Hello", voice: "alice")`, with an
`add_` prefix when a child tag collides with a field), and preservation of unknown attributes and child
elements (`additional_attributes`, `additional_children`, `add_child`). A REXML-based
`Internal::Xml` runtime (with DOCTYPE rejection) is emitted only when XML-encoded types exist.