Save data frame with special characters in csv

General Usage
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4

The BOM Header is missing in the .csv file.
Try the following:

using DataFrames, CSV
df = DataFrame([:TypeProduct => [1,2,3], Symbol("Coût - €/l") => [4,5,6]])
CSV.write("df.csv", df;delim=";")

inStream = open("df.csv","r")
outStream = open("df_bom.csv","w")
print(outStream,"\xEF\xBB\xBF")  #UTF-8 BOM header
print(outStream, read(inStream,String))
close(outStream)
close(inStream)
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