containers: impl DerefMut for Bindle

src/containers/bindle.rs

@@ -26,7 +26,7 @@
 use std::collections::BTreeMap;
 use std::fmt::{Debug, Display};
 use std::io::{self, Read};
-use std::ops::Deref;
+use std::ops::{Deref, DerefMut};
 use std::str::FromStr;
 
 use amplify::confinement::{self, Confined, TinyVec, U24};
@@ -155,6 +155,10 @@ impl<C: BindleContent> Deref for Bindle<C> {
     fn deref(&self) -> &Self::Target { &self.data }
 }
 
+impl<C: BindleContent> DerefMut for Bindle<C> {
+    fn deref_mut(&mut self) -> &mut Self::Target { &mut self.data }
+}
+
 impl<C: BindleContent> From<C> for Bindle<C> {
     fn from(data: C) -> Self { Bindle::new(data) }
 }