TUN/TAP Interfaces, improve & test bridge_and_sniff()

Add a fancy prompt

Updated README.md

[coverage] Add ScapyPipes tests

[coverage] Reduce coverage randomness: tls+TEX

Make FlagValue objects hashable

This will make them usable as set elements or dict or Counter keys.

fix usage example

Fix layers import

[coverage] New sys.stdout contextmanager + dadict tests

[coverage] Add analyse data test to pnio_rtc

[coverage] reduce randomness of coverage

[Windows] Fix decimal timestamp

Merge sndrcv() and sniff() implementations for Unix & Windows systems