message: Add PartialEq and Eq for Error
diff: @@ -23,7 +23,7 @@ pub struct Ledger {
  pub(crate) accounts: account::Ledger,
  }
  -#[derive(Debug, Clone)]
  +#[derive(Debug, Clone, PartialEq, Eq)]
  pub enum Error {
  NotEnoughSignatures(usize, usize),
  UtxoValueNotMatching(Value, Value),
  