Undefined authors cause low percentYou

[DerSaidin]

I noticed my PercentYou was much lower than it should be on some docs I wrote (~15% when I'd expect >95%).

counts[fileId] data looks like this

[
    // ...
    {
        "type": "comment",
        "ts": "2022-01-14T08:57:09.182Z"
    },
    {
        "type": "reply",
        "ts": "2022-01-25T18:30:53.472Z"
    },
    {
        "type": "reply",
        "ts": "2022-02-03T21:31:29.779Z"
    },
    {
        "type": "revision",
        "author": "me@myemail.com",
        "ts": "2022-02-11T11:34:34.428Z"
    },
    {
        "type": "revision",
        "author": "me@myemail.com",
        "ts": "2022-02-11T18:30:40.879Z"
    },
    // ...
]

The missing "author" fields on many edit objects cause the contributors counts to look like this

{"undefined":88,"me@myemail.com":20}

The best fix would be to get the correct author data.

If we cannot get the correct author data, would it make sense to skip counting edits changes with undefined author (particularly when they're only comment/reply)? ie. in this case 20/20 => 100%, instead of 20/(88+20) => 18%