Added value_ref and value_mut

Fixes #51

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to similar are documented here.
 
+## 2.3.0
+
+* Added support for `Change::value_ref` and `Change::value_mut`.
+
 ## 2.2.1
 
 * Fixed a panic in LCS diffs on matching input.  (#43)

src/types.rs

@@ -103,6 +103,16 @@ impl<T: Clone> Change<T> {
     pub fn value(&self) -> T {
         self.value.clone()
     }
+
+    /// Returns the underlying changed value as reference.
+    pub fn value_ref(&self) -> &T {
+        &self.value
+    }
+
+    /// Returns the underlying changed value as mutable reference.
+    pub fn value_mut(&mut self) -> &mut T {
+        &mut self.value
+    }
 }
 
 /// Utility enum to capture a diff operation.