Good to see author's mention about routing. I am mentally stuck with mux for a long time and didn't pay attention to the new release features. Happy that I always find things like these on HN.
Big fan of Echo and it has much better docs.
For example I made a lib to write commands (like cobra or urfave/cli), but based entirely on the `flag` package: https://github.com/Thiht/go-command
Looks nice! I'd like an easier way of setting both long and short flags for a command, i.e. --verbose and -v should do the same. Using `flag` I have to declare everything twice to achieve this.