Warning: This API should be considered pre-release and is subject to change.
Atom update feed, following the format expected by Squirrel.
Returns:
{
"name": "0.96.0",
"notes": "[HTML release notes]",
"pub_date": "2014-05-19T15:52:06.000Z",
"url": "https://www.atom.io/api/updates/download"
}