jberkel/android-plugin — pull request #131 by rst (2012-05-18 22:22:57+00:00)
Title: Tell ProGuard to preserve serialization hooks.  (re: issue 122)

Without specific notice, ProGuard will lop off readObject, readResolve, etc.,
which can lead to baffling failures, even when just serializing library
classes. For example, if you're serializing Scala Option[T] objects, losing
readResolve can get you duplicates of None, which is ordinarily a singleton;
that, in turn, can lead to spurious, and very strange-looking MatchExceptions.