Add compaction support (#22)

examples/patience.rs

@@ -0,0 +1,48 @@
+use similar::{Algorithm, TextDiff};
+
+const OLD: &str = r#"
+[
+    (
+        Major,
+        2,
+    ),
+    (
+        Minor,
+        20,
+    ),
+    (
+        Value,
+        0,
+    ),
+]
+"#;
+const NEW: &str = r#"
+[
+    (
+        Major,
+        2,
+    ),
+    (
+        Minor,
+        0,
+    ),
+    (
+        Value,
+        0,
+    ),
+    (
+        Value,
+        1,
+    ),
+]
+"#;
+
+fn main() {
+    println!(
+        "{}",
+        TextDiff::configure()
+            .algorithm(Algorithm::Patience)
+            .diff_lines(OLD, NEW)
+            .unified_diff()
+    );
+}