Potential issue with Vectronics example data

[Huh]

The csv saved in inst/ext-data had Latitude [degree symbol] in the column name. Previously readr::read_csv worked for this case and our rename function removed these characters. Now readr::read_csv fails on this file, but read.table, read.csv still work. I am making this issue as a place holder to return to this issue.

The stop gap measure taken was to remove those characters from the column names, for the time being.