Set relative-time.datetime as its title
// ==UserScript==
// @name GitHub relative datetime
// @namespace dyama.net
// @version 1
// @description Set relative-time.datetime as its title
// @match https://github.com/*
// @match https://gist.github.com/*
// @grant none
// @license WTFPL
// ==/UserScript==
const observer = new MutationObserver(ms => ms.forEach(m => {
if (m.attributeName == 'datetime' && m.target.tagName == 'RELATIVE-TIME')
m.target.title = m.target.attributes.datetime.value;
}));
observer.observe(document.body, {attributes: true, subtree: true});