factor out _extract_top_level_conditions and use it to rewrite _stack_cond
_resolve_condition for DQ exprs now provides correct value_meta
maintain condition order (left versus right) in _stack_cond
fix condition extraction for new_result
fix test to use qw as (so far as I can see) originally intended
fix unresolvable condition handling
Fix lean startup for Data::Compare -> Data::Dumper::Concise in ResultSet
fix foreign key identification in SQLT parser
literals on the other side of = are acceptable for a fixed condition
STRAIGHT_JOIN support for MySQL