1. element api: setattribute

2. element api: setattributenode

3. element api: setattributenodens

4. element api: setattributenodens: emoji and more unicode in element and attribute names and namespace prefix (valid names match html parser)

5. element api: setattributens

6. element api: setattributens: requires `value` parameter to be `trustedhtml`, `trustedscript`, or `trustedscripturl` instance when trusted types enforced (matching attribute type)

7. element api: setattribute: requires `value` parameter to be `trustedhtml` instance (for `iframe.srcdoc`), or `trustedscripturl` (for html `script.src`, and svg `script.href`) when trusted types are enforced

8. element api: setattribute: emoji and more unicode in element and attribute names and namespace prefix (valid names match html parser)

9. processinginstruction api: setattribute