Add support for [CGS Units](https://en.wikipedia.org/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units). I'm not sure where these should go yet - it's probably best to wait until #48 is complete before starting.
Add support for CGS Units. I'm not sure where these should go yet - it's probably best to wait until #48 is complete before starting.