Since this doesn't seem to have been mentioned in the thread, I'll point it out: [GPG Suite](https://gpgtools.org/), a well established GnuPG distribution on macOS that provides Mail.app integration and so on, currently uses GPG 2.0.30. I'm afraid that upgrading to 2.1.x (which automatically upgrades the keyring format in place) would destroy interoperability with GPG Suite.
I think a caveat should be added to warn users to **uninstall brewed gnupg 2.1.x** if they use GPG Suite.
Cut a release for packaging
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I learned about this fork from [the Engineering blog post](https://githubengineering.com/a-formal-spec-for-github-markdown/), and would love to add this to Homebrew (as well as use the extensions myself). A tag/release would be necessary for Homebrew though.
Would you please consider cutting a release? Thanks.
README: set Cache-Control: max-age=600 on various version badges
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Previously they had the following `Cache-Control` header:
Cache-Control: no-cache, no-store, must-revalidate
which means a refresh — and a visual flicker — on every single page refresh. That's not really necessary.