plack/Plack — pull request #427 by oalders (2013-09-05 14:40:21+00:00)
Title: Plack::Middleware::LogDispatch now stringifies objects.

This is something I poached from @autarch. If you're passing (for
instance) a Throwable exception to Log::Dispatch it will *not* stringify
the exception for you. This patch handles this case and also adds a
test to make sure that code refs are not stringified, since
Log::Dispatch does accept those as valid messages.