libs:
- iron_slog
- testing: keep it simple: iron-test
    => if that is annoying, shiny? mockers if needed.
- sentry
- start with dotenv+clap, then config-rs?
- cadence (emits statsd)
- frank_jwt and JWT for (simple?) auth

similar:
- https://github.com/DavidBM/templic-backend
- https://github.com/alexanderbanks/rust-api
- https://mgattozzi.com/diesel-powered-rocket
- https://www.reddit.com/r/rust/comments/8j1xbs/new_to_rust_and_gitlab_ci/
- https://crate-ci.github.io/

"cool tools":
- cargo-watch