• Support for SSHSIG verification.
• Support for signature verification using SKED25519 and SKECDSA256.
• Fix DSA key generation for Ruby-OpenSSL 3.0 where the default Q-bits size changed.

• Support basic parsing of Ed25519-SK and ECDSA-SK keys
• Support for Ruby 3.0.

Support for force-command and source-address critical options.

Getting ready to opensource

• Parse PEM keys with empty passphrase — #10

• Raise on unknown private key PEM types — #6
• Re-encode PublicKey in OpenSSH authorized_keys format — #7
• Re-encode Certificate in OpenSSH authorized_keys format — #8
• Support RSA SHA2 variants — #9