Puffy-in-the-Middle (PITM)

• Add hotplugd
• Add include configuration statements
• Load pf anchors from files
• Update martians pf table
• Modernize LICENSE
• Add syspatch to crontab
• Fix NTP redirect
• Append advertised recursive DNS server to resolv.conf
• Update ifstated ping test
• Update unbound crontab
• Add slaacd and slaactl usage examples
• Update autoinstall answers
• Autodetect LetsEncrypt agreement URL
• Add smtpd.conf
• Reset IPv6 tunnel with hostname.gif0
• Enable pf syncookie adaptive mode
• Connect to switch0 on reboot, thank you @bentley
• Add TLS inspection (MITM) with relayd