[Unreleased] [0.3] - 2025-09-03 Breaking change: rename sm2_crypto to sm2-crypto to fix rails autoload [0.2.2] - 2025-03-26 Add ASN.1 DER format for sm2 sign and verify [0.2.0] - 2023-04-21 Add sm2 sign and verify support [0.1.0] - 2023-03-27 Initial release