bump version to v0.17.0
update
more cmds
dashboard_api for getting a client status by name
fix https://github.com/fatedier/frp/issues/684
#684 Cannot build from Dockerfile
bump version to v0.16.1
some fix
build freebsd packages
bump version to v0.16.0
new feature
bump version to v0.15.1
fix websocket and plugin http_proxy
bump version to 0.15.0
doc: update