Dan Kubb (support for "quote_char" and "name_sep")
Guillermo Roditi (patch to cleanup "IN" and "BETWEEN", fix and tests for _order_by)
Laurent Dami (internal refactoring, multiple -nest, extensible list of special operators, literal SQL)
+ Norbert Buchmuller (support for literal SQL in hashpair, misc. fixes & tests)
Thanks!