Add Reunion as a country?

[mk19807]

As French Guyana is a country in our minds, then Réunion should be too...

https://www.iso.org/obp/ui/#iso:code:3166:RE

And could French Guyana be missed due to spelling issues? Guiana or Guyana... Officially it's Guiana, but its also spelled as Guyana and the French write Guyane France

[mk19807]

I see there is a lot more work to do :/

https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes

Let me know if I can do some coding .. Shouldn't be too hard once you know what to do

[Kyrremann]

This is solved in earlier commits.