rk 0.1.7

• Homebrew releases now use a Formula, the native installation surface for a
  command-line tool, so freshly downloaded signed binaries run under macOS
  Gatekeeper instead of being rejected as an unstapled Cask artifact.
• The first Formula publication compare-and-swaps both tap coordinates in one
  commit: it creates Formula/<name>.rb and removes only the exact legacy
  Casks/<name>.rb that rk inspected.
• Release manifests now describe a generic Homebrew binding while retaining
  read compatibility with the public schema-6 Cask manifests.
• Native and containerized binary smoke tests now have a finite deadline, so
  a wedged runtime or credential helper cannot hold staging indefinitely.