Looking for patch reviews for these four date/time-related patches:
1. defect: Time #years_since/ago give different results from #advance and #plus/minus_with_duration when advancing from leap day http://dev.rubyonrails.org/ticket/9865
2. defect: Date #years_since/ago raises Invalid Date error with leap day http://dev.rubyonrails.org/ticket/9864
3. refactor: Time and Date #months_since/ago uses #advance instead of custom logic http://dev.rubyonrails.org/ticket/9863
4. enhancement: Time and DateTime #advance honors :hours, :minutes and :seconds options http://dev.rubyonrails.org/ticket/9825
Thanks, Geoff B