Released on 2019-02-12:
* gpg: Implement key lookup via keygrip (using the & prefix).
* gpg: Allow generating Ed25519 key from existing key.
* gpg: Emit an ERROR status line if no key was found with -k.
* gpg: Stop early when trying to create a primary Elgamal key. [T4329]
* gpgsm: Print the card's key algorithms along with their keygrips in interactive key generation.
* agent: Clear bogus pinentry cache in the error case. [T4348]
* scd: Support "acknowledge button" feature.
* scd: Fix for USB INTERRUPT transfer. [T4308]
* wks: Do no use compression for the the encrypted challenge and response.
See-also: https://lists.gnupg.org/pipermail/gnupg-announce/2019q1/000434.html