Add support_unit public instance method
Merge branch 'orders' into adjudicator
Add test for .where()  supported unit key
Remove noise methods
Add tests for .where() country
Add tests for original order match

Usage looks something like this `.where(original_order: 'A Vie S A Tyr-Tri')`
Add supported_unit_order

This method will give the formatted order string of the supported unit.

See test example:
order = F Bul(ec) S F Bla-Rum
order.support_unit_order
=> 'F Bla-Rum'
Add supported_unit indexing