Grails 7: (grails#46) add notable changes to README.md for the 5.0.x …

…version of the plugin

README.md

@@ -8,4 +8,45 @@ See [documentation](https://grails-plugins.github.io/grails-spring-security-acl/
 
 To run the tests exeucte: 
 
-`./gradlew -Dgeb.env=chromeHeadless check`
+`./gradlew -Dgeb.env=chromeHeadless check`
+
+## v5.0.0 changes
+
+### Caching
+
+The default cache manager has changed to
+[JCacheCacheManager](https://docs.spring.io/spring-framework/docs/6.2.0/javadoc-api/org/springframework/cache/jcache/JCacheCacheManager.html).
+
+### Method parameter discovery
+
+The behavior of parameter discovery has changed to align with
+[Spring Security 6 default](https://docs.spring.io/spring-security/site/docs/6.4.1/api//org/springframework/security/core/parameters/DefaultSecurityParameterNameDiscoverer.html)
+behavior.  This may require code changes if you are utilizing ACL
+annotations that reference method parameters.  You will need to add the
+[P](https://docs.spring.io/spring-security/site/docs/6.4.1/api/org/springframework/security/core/parameters/P.html)
+annotation to reference method parameters.  This is documented in the
+Spring Security reference doc under the
+[Using Method Parameters](https://docs.spring.io/spring-security/reference/servlet/authorization/method-security.html#using_method_parameters)
+section.
+
+Previously if you had code similar to:
+```
+@PreAuthorize("hasPermission(#contract, 'write')")
+public void updateContact(Contact contact) {
+    ...
+}
+```
+
+This should be changed to:
+
+```
+import org.springframework.security.core.parameters.P
+
+@PreAuthorize("hasPermission(#contract, 'write')")
+public void updateContact(@P("contract") Contact contact) {
+    ...
+}
+```
+
+Since parameter `contract` is referenced in the `@PreAuthorize` annotation, it
+should now be annotated with `@P`.