Commit [b81728] Maximize Restore History

Fail better if asked to serialize a non-reference.

A component was trying to serialize undef() rather than a reference to
something undefined. It was causing failure attributed to this
filter, rather than the user. Now there's a stack trace to help
spread the blame.

Rocco Caputo Rocco Caputo 2013-09-05

changed lib/POE/Filter/
lib/POE/Filter/ Diff Switch to side-by-side view