3.1.0

• Added support for scanning for supported elliptic curves (#447):

$ python -m sslyze --elliptic_curves www.cloudflare.com

 * Elliptic Curve Key Exchange:
       Supported curves:                  prime256v1, secp384r1, secp521r1, X25519
       Rejected curves:                   sect163r2, secp160r1, sect233k1, X448, secp160r2, sect233r1, secp192k1,
sect239k1, secp224k1, sect193r1, sect283k1, secp224r1, sect163k1, sect283r1, secp256k1, secp160k1, 
sect409k1, prime192v1, sect409r1, sect163r1, sect193r2, sect571k1, sect571r1

• Added support for cryptography 3.x (#455).
• Fixed various crashes (#458, #459).