[Feature Request] Ability to save the dmg install images

[justeepin]

How about offering the option to save the dmg (or zip) installer files for those of us that like to keep backups of them?

[milanvarady]

As with your previous issue I'm not in charge of the actual download process, brew does the heavy lifting. DMG, ZIP, and PKG files are cached to ~/Library/Caches/Homebrew/Cask, where they are available until they're cleaned by brew.