Invalid baudrates should throw instead of fail silently in some edge cases

[reconbot]

💥 Proposal

Sometimes custom baud rates on linux do not get set. This can vary due to kernel versions and driver versions.

What feature you'd like to see

I'd like open() to check that an opened port's baudrate is what is expected and fail if that is the case. We'd get to remove the binding.getBaudRate() function if this was the case.

Motivation

cleaner api

Pitch

The less api surface area we have the better.