• Replace elliptic with ethereum-cryptography/secp256k1
• Bump ethers to ^6.6.0
• Optimize argument validation for createToken, updateToken and applyForSR
• callValue can be 0 when the contract constructor is payable
• Support shouldPollResponse to customize poll times (#368)
• Support TIP541 by transactionBuilder.cancelUnfreezeBalanceV2
• Support TIP542 by adding a parameter in transactionBuilder.delegateResource
• Support estimate the energy used in contract deployment by transactionBuilder.deployConstantContract