From: Jean Privat <jean@pryen.org>
Date: Fri, 10 Feb 2017 16:00:00 +0000 (-0500)
Subject: Merge: mongo::queries: add unwind method
X-Git-Url: http://nitlanguage.org

Merge: mongo::queries: add unwind method

Also fix `op` method so it matches the specification in the comment

Pull-Request: #2362
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d481273a5f4f42e9c2e709a9e9aef76c1d7c68cc