Use Standard Alpha 2 County Codes

[mjanulaitis]

Feature Request
Currently the heat map uses Alpha 3 country codes which is in my experience is not used in geo mapping. Tools and OS'es such as IP Geo Location Databases, Windows, and Linux used the standard Alpha 2 letter country codes. To integrate this tool with the typically implemented standard, a mapping file must be created to work around the limitation.

What I'd Like
Use the Alpha 2 country codes.

Alternatives
Mapping :(

[mjanulaitis]

If you load a geojson file that supports both country codes this is an easy change.