Update CHANGELOG.md

Author: GrahamCampbell

CHANGELOG.md

@@ -7,7 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [11.8.0] - UPCOMING
 
-* TBC
+* Add support for `reviewer_id` and `wip` params in `MergeRequests::all()`
+* Add support for `Projects::pipelineJobs()`
+* Allow specifying params in `Wiki::showAll()`
+* Allow specifying params in `SystemHooks::create()`
+* Implement group merge requests endpoints
+* Implement event endpoints
 
 [11.8.0]: https://github.com/GitLabPHP/Client/compare/11.7.0...11.8.0