fabpot/Pimple — pull request #56 by mvriel (2012-12-17 21:26:12+00:00)
Title: Initialize property for serializers

Serializers and test frameworks skip the constructor using
serialization tricks. This means that if an empty Pimple instance is
serialized and later deserialized that the $values property contains
'null'. This breaks offsetExists() and several other locations that
assume the $values property contains an array.