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@grant xml*h*ttpRequest seems to be a typo, strange that it worked in testing

(also, testing the greasyfork feedback system)

not a typo: https://www.tampermonkey.net/documentation.php#api:GM_xmlhttpRequest

Actually, seems the naming just isn't consistent between the two api styles, and this actually is broken: https://www.greasespot.net/2017/09/greasemonkey-4-for-script-authors.html

Strange that it worked when I tested it. Must've oopsied the name afterwards and without a new test.