Update changelog.yml

Author: flash-gordon

changelog.yml

@@ -1,4 +1,49 @@
 ---
+- version: 1.8.0
+  date: 2025-03-09
+  added:
+  - |-
+    Added super_diff extension for improved struct diffing in RSpec tests (@flash-gordon in #197)
+
+    Add this to your Gemfile:
+    ```ruby
+    gem 'super_diff', group: :test
+    ```
+
+    Then activate the extension in your spec_helper:
+    ```ruby
+    Dry::Struct.load_extensions(:super_diff)
+    ```
+
+    Now this
+
+    ```ruby
+       expected: #<Test::User name="Jane" age=22>
+            got: #<Test::User name="Jane" age=21>
+
+       (compared using eql?)
+
+       Diff:
+       @@ -1 +1 @@
+       -#<Test::User name="Jane" age=22>
+       +#<Test::User name="Jane" age=21>
+    ```
+
+    will become this:
+
+    ```ruby
+       expected: #<Test::User name: "Jane", age: 22>
+            got: #<Test::User name: "Jane", age: 21>
+
+       (compared using eql?)
+
+         #<Test::User {
+           name: "Jane",
+       -   age: 22
+       +   age: 21
+         }>
+    ```
+
 - version: 1.7.1
   date: 2025-01-31
   fixed: