9dd5b0723e98db10bb169843972de9d6ea6f3f8b Update private key derivation to ensure secp256k1 compliance. Add tests for verifying curve types and parameters in HD wallet implementation. Resolves #37
b779788cb2fa9a07ab57eb28ab285785872ba429 Add CONTRIBUTING.md file with guidelines for reporting bugs, suggesting enhancements, and submitting pull requests
72ab0909025ad286bf0da9161a6e9ee5e0d7dd98 Use base SignTxWithSigner for SignTxEIP1559, SignTxEIP155, and SignTx. Add signing tests for legacy, EIP-155, and EIP-1559 transactions
9796825ce2753091b33819c467cd73ce0045ce06 Merge branch 'ben/custom-signer-and-eip1559' of github.com:BenZuckier/go-ethereum-hdwallet into BenZuckier-ben/custom-signer-and-eip1559
