Methods of old structures that return transaction(s) no longer return `TxNode`, but `Transaction` as done previously. `TxInGraph` is renamed to `TxNode`, while the internal `TxNode` is renamed to `TxNodeInternal`.
Methods of old structures that return transaction(s) no longer return `TxNode`, but `Transaction` as done previously. `TxInGraph` is renamed to `TxNode`, while the internal `TxNode` is renamed to `TxNodeInternal`.