Added xlim and ylim arguments to borders() #1392
Merged
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The borders() function is extremely handy if you are working with geographical data but the specification of the geographical region-of-interest is limited to defining regions via text strings i.e. via the regions="" argument. However, both the maps::map() function and ggplot2::map_data() accept geographic region specification using xlim and ylim arguments. This modification extemds that functionality to borders()