Merge branch 'release/0.1.1' into develop
Added ARP parser and generator.

- Arp parser and generator (Pio::Arp::Request and Pio::Arp::Reply).
- Refactored Pio::Lldp.
Removed open clock.
Closed the TODO item (tests in real network).
Archived some DONE tasks.
Version bump.
Removed copyright notice.
Merge branch 'release/0.2.0'