Handle conflicting fields when resolving parsed objects

[erikc5000]

Right now, if a DateTime parser provides both DAY_OF_MONTH and DAY_OF_YEAR, it'll just take the day of month value first assuming it has a year and month. But the day of year value may conflict or otherwise be indicative of a poorly defined custom parser.

This sort of behavior needs to looked at across all date-time primitives and may require more sophisticated resolution behavior.