Highlight feature

README.md

@@ -44,8 +44,8 @@ or
 - **stages_image_name**: Set custom name for stages. Useful if using a job matrix (default: `$image_name-stages)`.
 
 - **build_extra_args**: Extra params for `docker build` (e.g. `"--build-arg=hello=world"`).  
-  If you need extra args with newlines or spaces, use json format like this:  
-  `build_extra_args: '{"--build-arg": "myarg=Hello\nWorld"}'`
+  > :star2: New in v5.11.0: If you need extra args with newlines or spaces, use json format like this:  
+    `build_extra_args: '{"--build-arg": "myarg=Hello\nWorld"}'`
 
 - **push_image_and_stages**: Test a command before pushing. Use `false` to not push at all (default: `true`).