Before, grouped feeds would only use the last 30 revisions.
If part of a group was outside these revisions, it would be handled incorrectly.
Now, grouped feeds contain the last 30 groups, and use as many revisions as needed for this.
Add wiki name and remove author from feed metadata
Hyphenate order settings
Change default order from new-to-old to old-to-new
Only group edits from the same author
Add author to feed item titles
