v3.1.0

abf4fd6 build.sh: No longer providing self-signed certificates
10dae5e build.sh: Build more arch
1d85e64 ssl cert/key config: Remove default value
c2decf6 Drop the pwauth
0c20b53 Make the variable names more understand
181f192 Don't print GitCommit and BuildTime If it is empty
a3d16cb web: use VueCli4.x and typescript

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-linux-arm.tar.gz
rttys-linux-arm64.tar.gz
rttys-linux-mips.tar.gz
rttys-linux-mips64.tar.gz
rttys-linux-mips64le.tar.gz
rttys-linux-mipsle.tar.gz
rttys-windows-386.zip
rttys-windows-amd64.zip