The package is unmaintained, unsafe at any speed, and does not receive security fixes. Document that, and point at the ProtonMail fork for those that _must_ still use OpenPGP. Change-Id: Ia602eaaf9e08bd25389400ebe7f346b60bdb9d99 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/794200 Auto-Submit: Roland Shoemaker <roland@golang.org> LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Damien Neil <dneil@google.com>