schacon/git-reference — pull request #35 by freshtonic (2012-04-10 02:12:53+00:00)
Title: Fix documentation for git log --since --authored

"By default, “git log” displays author dates as “Date” but then uses commit
dates when given a –since option. That seems like broken defaults to me."
- http://www.alexpeattie.com/blog/working-with-dates-in-git/

filter commits by date authored

should be

filter commits by date committed