message: docs(utxo-lib): improve Unspent docstrings
  Issue:
diff: @@ -8,15 +8,17 @@ import { UtxoTransactionBuilder } from './UtxoTransactionBuilder';
  */
  export interface Unspent {
  /**
  - * Format: ${txid}:${vout}
  + * Format: ${txid}:${vout}.
  + * Use `parseOutputId(id)` to parse.
  */
  id: string;
  /**
  - * In network-specific representation
  + * The network-specific encoded address.
  + * Use `toOutputScript(address, network)` to obtain scriptPubKey.
  */
  address: string;
  /**
  - * In satoshi
  + * The amount in satoshi.
  */
  value: number;
  }
  