Issue in the get_eastern_map function

[mcmccue1]

I downloaded the package onto my windows pc using R studio version 3.6.1 and tested the map_counties examples to run. None of them ran.

I pulled down the code, and saw that the issue was in the get_eastern_map function, when combining the region and subregion as a identifier for the left join. The fix was to remove the from argument.

In addition, I would recommend implementing some unit tests, as the get_eastern_map function seems to be a frequently used function.