Update CHANGELOG

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CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
-v 8.2.0 (unreleased)
+v 8.1.4
   - Fix bug where manually merged branches in a MR would end up with an empty diff (Stan Hu)
-  - Force update refs/merge-requests/X/head upon a push to the source branch of a merge request (Stan Hu)
-  - Improved performance of finding users by one of their Email addresses
-  - Improved performance of replacing references in comments
-  - Show last project commit to default branch on project home page
-  - Highlight comment based on anchor in URL
-  - Adds ability to remove the forked relationship from project settings screen. (Han Loong Liauw)
-  - Improved performance of sorting milestone issues
-  - Allow users to select the Files view as default project view (Cristian Bica)
-  - Show "Empty Repository Page" for repository without branches (Artem V. Navrotskiy)
-  - Fix: Inability to reply to code comments in the MR view, if the MR comes from a fork
-  - Use git follow flag for commits page when retrieve history for file or directory
-  - Show merge request CI status on merge requests index page
-  - Extend yml syntax for only and except to support specifying repository path
-  - Enable shared runners to all new projects
-  - Fix: 500 error returned if destroy request without HTTP referer (Kazuki Shimizu)
-  - Remove deprecated CI events from project settings page
-  - Use issue editor as cross reference comment author when issue is edited with a new mention.
-  - [API] Add ability to fetch the commit ID of the last commit that actually touched a file
-  - Add "New file" link to dropdown on project page
-  - Include commit logs in project search
-  - Add "added", "modified" and "removed" properties to commit object in webhook
-  - Rename "Back to" links to "Go to" because its not always a case it point to place user come from
-  - Allow groups to appear in the search results if the group owner allows it
+  - Prevent redirect loop when home_page_url is set to the root URL
 
 v 8.1.3
   - Force update refs/merge-requests/X/head upon a push to the source branch of a merge request (Stan Hu)