square/wire — pull request #158 by JakeWharton (2014-10-04 09:35:56+00:00)
Title: Revert "Add an __UNDEFINED_ value to all ProtoEnums"

This reverts commit 59288e6b539057a8e1317a3b15805a53cf4db067 and 5a97a3788bddae5fddf7619b65affe83d80a9f60.

Closes #157.

@swankjesse @danrice-square @loganj