• Enable Muxed Accounts (SEP-23) by default (#4169):
  • Remove TransactionParams.EnableMuxedAccounts
  • Remove TransactionFromXDROptionEnableMuxedAccounts
  • Remove FeeBumpTransactionParams.EnableMuxedAccounts
  • Remove parameter withMuxedAccounts bool from all methods/functions.
  • Remove options ...TransactionFromXDROption parameter from TransactionFromXDR()
  • Rename SetOpSourceMuxedAccount() to (pre-existing) SetOpSourceAccount() which now accepts
    both G and M (muxed) account strkeys.
• Use xdr.Price to represent prices in txnbuild instead of strings (#4167).