Determines how many edits a user has made as well as how many more edits until the `Editor`, `Strunk & White` and `Copy Editor` badges are earned.
Logic based on Waffles' explanation: http://meta.stackoverflow.com/questions/79054/copy-editor-with-too-few-revisions/80260#80260
Counts posts that have been edited.
Final version: http://data.stackexchange.com/stackoverflow/s/1024
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