nip49 1.2.0

NIP-49 Private Key Encryption for Nostr protocol - encrypt/decrypt private keys with passwords.

1.2.0

• Replace pointycastle with a built-in scrypt: about 28x faster with dart2js, 11x with dart2wasm and 1.8x on native
• Run key derivation in a separate isolate on native platforms so it no longer blocks the UI
• Reject payloads that are not exactly 91 bytes
• Reject an unknown key security byte when encrypting
• Throw ArgumentError for invalid bech32 input

1.1.2

• Upgrade pointycastle to 4.0.0

1.1.1

• Dowgrade pointycastle to 3.9.1 for NDK support

1.1.0

• Added full Unicode NFKC normalization support for passwords
• Added unorm_dart dependency for proper Unicode handling
• Improved NIP-49 specification compliance to 99%
• Added Unicode normalization tests
• Removed unnecessary typed_data dependency