Merge #932: Derive Eq for PSBT types

603e75e Derive Eq for PSBT types (Dr Maxim Orlovsky)

Pull request description:

  Closes #931

ACKs for top commit:
  apoelstra:
    ACK 603e75e
  sanket1729:
    utACK 603e75e.

Tree-SHA512: 8099e80aa2000b3d1284543b6bfab3edd45f8649519bd09b4d73d250bdb6cce5edf67a1e0e0cec61db23c358daca286061641da5ff5c2a8b4b030d1199707c94

src/util/psbt/map/input.rs

@@ -79,7 +79,7 @@ const PSBT_IN_PROPRIETARY: u8 = 0xFC;
 
 /// A key-value map for an input of the corresponding index in the unsigned
 /// transaction.
-#[derive(Clone, Default, Debug, PartialEq)]
+#[derive(Clone, Default, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Input {
     /// The non-witness transaction this input spends from. Should only be

src/util/psbt/map/output.rs

@@ -47,7 +47,7 @@ const PSBT_OUT_PROPRIETARY: u8 = 0xFC;
 
 /// A key-value map for an output of the corresponding index in the unsigned
 /// transaction.
-#[derive(Clone, Default, Debug, PartialEq)]
+#[derive(Clone, Default, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Output {
     /// The redeem script for this output.

src/util/psbt/mod.rs

@@ -47,7 +47,7 @@ use self::map::Map;
 use util::bip32::{ExtendedPubKey, KeySource};
 
 /// A Partially Signed Transaction.
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PartiallySignedTransaction {
     /// The unsigned transaction, scriptSigs and witnesses for each input must be