Browser View (bv) is a program for piping stdout to web browser.
Original idea & implementation by Ryan Tomayko in bcat.
Graceful shutdown: https://play.golang.org/p/6w3yFxU1N24
https://rafallorenz.com/go/handle-signals-to-graceful-shutdown-http-server/
https://medium.com/honestbee-tw-engineer/gracefully-shutdown-in-go-http-server-5f5e6b83da5a