feat(bip0032): impl Display for Version (#113)

Author: koushiro

bip0032/src/xkey/payload/version.rs

@@ -1,5 +1,7 @@
 //! Version bytes for extended key payloads.
 
+use core::fmt;
+
 /// Extended key version bytes.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum Version {
@@ -9,6 +11,12 @@ pub enum Version {
     Private(u32),
 }
 
+impl fmt::Display for Version {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "0x{:08X}", self.as_u32())
+    }
+}
+
 impl Version {
     /// Creates a public version from raw version bytes.
     pub const fn public(value: u32) -> Self {