refactor handshake process

update for ipv6 -listen-addr

npm updates; add config to join cmd; refactoring

fix config; add config to tags,rtt,info,ui cmds

add config for bootstrap cmd

fix Makefile

merge ui changes

lint

add ui improvements; update goreleaser config; add docs

ipam for bootstrap nodes; authentication basis

add rtt to ui

add ui

add tags output; refactoring; docs

serf lan/wan mode; docs; refactoring

add makefile; docs; refactoring; dev mode