Remove Script() from LowerHex impl of Script

This is easy for downstream to add, not easy for them to remove. Plus scripts
have a pretty recognizable form and are usually obvious from context anyway.

Cargo.toml

@@ -1,7 +1,7 @@
 
 [package]
 name = "bitcoin"
-version = "0.3.4"
+version = "0.3.5"
 authors = ["Andrew Poelstra <apoelstra@wpsoftware.net>"]
 license = "CC0-1.0"
 homepage = "https://github.com/apoelstra/rust-bitcoin/"

src/blockdata/script.rs

@@ -57,11 +57,19 @@ impl Clone for Script {
 
 impl fmt::LowerHex for Script {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(f.write_str("Script("));
         for &ch in self.0.iter() {
             try!(write!(f, "{:02x}", ch));
         }
-        f.write_str(")")
+        Ok(())
+    }
+}
+
+impl fmt::UpperHex for Script {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        for &ch in self.0.iter() {
+            try!(write!(f, "{:02X}", ch));
+        }
+        Ok(())
     }
 }