Release v1.2

Fixed cmd processor to solve an issue with bad cmd, if cmd finished with an error it is possible to clean-up state and wait for a next cmd

Release v1.1

It is possible to interact with device by commands and got answers wrapped in frames (see frames format in Readme, we are having here 2 following commands:

1. SET 4-byte register
2. GET 4-byte register

This is a pre-release because we didn't test it thoroughly, but we could submit that this demo works both in testbenches and in hardware.

Release v1.0.1

Finally Echo+1 demo works fine (fixed parity bit send in quick_rs232 module), see:

Release v1.0

Fully works Serial Echo Demo (got byte from RS-233, increment it and return back)

Release v0.1

Added demo for testing Serial Echo (not tested yet in hardware)