Upgrading
berth upgrade # upgrade the way you installed it
berth upgrade --check # just compare with the latest release
With Homebrew that's brew update then brew upgrade berth, and Berth checks
the new version really got installed. The running berthd notices its new
binary, waits for any deploy in progress, and restarts itself. Your apps keep
running the whole time.
From a laptop, berth upgrade upgrades the laptop and then offers to do the
Mac. If the two are on different versions, commands tell you.
Upgrading from 0.1.0 or 0.1.1? Run brew update && brew upgrade berth once by
hand. Those versions' berth upgrade forgot the brew update.