Grabs Rocket League MMR data for a list of players and adds it to a Google Sheet
gcr_mmr.py is the file that was used for season 5 of the GCR to update the Vytarien spreadsheet.
mmr_update.py is a newer and cleaner version that updates a personal spreadsheet that can be used as a reference.
You will need to set up access to the Google Sheets API by following the instructions at https://developers.google.com/sheets/api/guides/concepts