Fix and re-enable --master-key option, possibly --out (for keys) and possibly --nopass for non-interactive key generation
See #16769 (moved) -- it proposed a few command-line arguments to make ed25519 key management easier. I got one of them implemented, but the rest weren't ready for 0.2.7.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information