- More robust handling of circular relationship declarations by loading
foreign classes less frequently (should resolve issues like
http://lists.scsys.co.uk/pipermail/dbix-class/2013-June/011374.html)
+ - Fix multiple edge cases of complex prefetch combining incorrectly
+ with correlated subquery selections
- Fix multiple edge cases steming from interaction of a non-selecting
order_by specification and distinct and/or complex prefetch
- Clarify ambiguous behavior of distinct when used with ResultSetColumn