Bring serial code over from Mantis #60
Description
@elliotnash making this an issue because I'm not sure @ works inside project cards...
The Mantis serial code is really nice and something we want in the lib, especially with how clunky wpi's is. I'd love it if you could port it over (probably put it in the hardwareWrappers branch at hardware/serial or such) and expand it such that you can select the serial port you use. Also I want you to get the credit for it.