* Refactor into new 'console' module.
A breaking change, but should finally see us move away from the chronic edge
cases and inconsistent behaviour we have while trying to shoe-horn the
usb-serial-jtag and cdc-acm consoles into uart behaviour and assumptions.
* Fix and document console.write()
Added example on using framed data transmission over the console.
* fixup uart examples
* Add workaround for silently dropped console output.
* Add file upload helper script for console module.
Plus, it can serve as a reference for any IDEs which may need/want
updating.
* Fixup really silly copy/paste error.
* Make upload-file.py work better on CDC-ACM console.
* Updated console module doc with CDC-ACM info.
* Load file in binary mode in upload-file.py.
Jade Mattsson