mikeal/request — pull request #1057 by davidwood (2014-09-06 19:51:57+00:00)
Title: Defaults should not overwrite defined options

In a recent commit, the applying of defaults changed from a `forEach` loop that only applied a default if the option is `undefined`, to using node's `util._extend`, which simply copies from one object to another. This change introduced a regression where defaults overwrite defined options.