Matching condominium units for US addresses

[liebscher]

Hi, thanks for the fantastic package. I'm finding it really useful.

Occasionally, some addresses aren't identified in natural text and I've deduced this to their use of "Unit \d+" to denote the unit of a condo. E.g.:

5625 NW 109th Ave, Unit 65, Doral, FL, 33178
451 Ives Dairy Road, Unit 204-1, Miami, Florida 33179

A search on the repo and I don't know if this variant has been mentioned before. If there's a reason this isn't implemented, sorry for missing that. If this is a possible improvement, I'd be happy to make the PR just let me know.

Until then, I might just replace all "Unit" with "Room" or one of the other current variants. Thanks!