v1.1 - minor bug fix, go update, feature flag

• Uses go modules
• Deprecates use of io.ioutil
• Minor bug fix
  • correctly write the output file when using -o
• Adds the -richraw flag to slightly enrich the raw output when writing to file (no hexdump, but identifies server/client messages)

Checksums

22abfa179ddc6338710496509e934ea2eb9224917c1eadb0c32f7649fc3ba1a0  tcpprox-linux86
7a0cebb7d34748b42689e3975cf36e850ebbfb8bcae510f60e3772450f34ed93  tcpprox-win86.exe
06a2309e160f863491e0838d6bbefe2b74984aaa12b656bbc5ce7a24dbe52d10  tcpprox-linux64
b2330389e44d3e5c66b659d51580ff63ce968d33e9741a0c296c32a6b93163ca  tcpprox-win64.exe
1e46aa04fe77178ab660890e3e53a75c0b22d3b19b3f037521c08a777b1b6bef  tcpprox-osxarm64
870442344c392293df20672e4bf2263ff096cc6ff7f86ae2948059659658e65c  tcpprox-osx64