doctrine/doctrine2 — pull request #984 by holtkamp (2014-03-20 10:08:34+00:00)
Title: Use boolean values for 'unique' attribute

As defined in: https://github.com/doctrine/doctrine2/blob/master/doctrine-mapping.xsd#L294

Same as 'nullable' attribute.

It was being exported as a "1" for TRUE and "0" for false