C2FO/patio — pull request #115 by aheuermann (2014-05-15 15:26:27+00:00)
Title: Fixing grouped expressions for arrays of hashes with keys > 1

Changing `.filter(...).andGroupedOr([{a:1, b:2}, {c:3, d:4}])`
to `... AND (a=1 AND b=2) OR (c=3 AND d=4)`
instead of `... AND (a=1 OR b=2 OR c=3 OR d=4)`