v3.0.0

38e7482 html: Update some package
0846fce Do not use websocket for device

pre-built release binaries:
rttys-darwin-386.tar.gz
rttys-darwin-amd64.tar.gz
rttys-freebsd-386.tar.gz
rttys-freebsd-amd64.tar.gz
rttys-linux-386.tar.gz
rttys-linux-amd64.tar.gz
rttys-windows-386.zip
rttys-windows-amd64.zip