You caught us doing some quick maintenance, temporarily restricting your repository to read-only access.
Issue #36 resolved
In GnuPG 2.1.7 or later, encryption with Curve25519 is supported (if linked with newer libgcrypt of development version). Here is a patch to accept keys created by GnuPG 2.1.x with newer libgcrypt.
No, it's not defined in standard yet.