This builds off of the co2mon logger by Oleg Bulatov.
This macOS Swift CLI project was primarily designed to get the kinks out of embedding the hid and co2mon code components into an Xcode project for an eventual GUI/menubar-based app.
Swift is in charge of the event loop.
This has been tested with the RAD-301 'CO2Mini Indoor Air Quality Monitor' from CO2Meter.com
