message: feat(utxo-lib): add maximumFeeRate for PsbtOpts
diff: @@ -39,6 +39,7 @@ export interface TaprootSigner {
  export interface PsbtOpts {
  network: Network;
  + maximumFeeRate?: number; // [sat/byte]
  }
  // TODO: upstream does `checkInputsForPartialSigs` before doing things like
  