fastd v12
Development version
Flood unicasts for unknown addresses
Flood forwarded unicast frames the same way as locally generated ones
peer: add assertion to ensure no addresses are learned on unestablished peers
Enable secure handshakes by default
Move systemd service file from examples dir to doc
Add a man page
Don't depend on libsystemd-daemon for systemd integration, always use systemd integration on Linux
Rename man page to fastd.1
Various fixes in --bind command line option

Specifying a port with "any" address and using scoped IPv6 link-local addresses
is possible now.
Set IP_FREEBIND
Use #pragma once
Move handling of resolve returns requests to a new source file
Add support for multiple async message types
Improve shell command config handling
Add support for async commands
Add on-connect hook
Break very long line
Simplify handling of on-verify commands