问题
How do I find out who closed a pull request using the Github API?
e.g. this pull request was opened by myakura, closed by markdotto. But https://api.github.com/repos/twitter/bootstrap/pulls/4461 doesn't show any reference to markdotto.
来源：https://stackoverflow.com/questions/12033171/github-api-find-out-who-closed-a-pull-request