Add changelog entry.

CHANGELOG-EE

@@ -6,12 +6,13 @@ v 8.2.0
   - Fix "Rebase onto master"
   - Ensure a comment is properly recorded in JIRA when a merge request is accepted
   - Allow groups to appear in the `Share with group` share if the group owner allows it
+  - Add option to mirror an upstream repository.
 
 v 8.1.0 (unreleased)
   - added an issues template (Hannes Rosenögger)
 
 v 8.1.0
-  - Add documentation for "Share project with group" API call 
+  - Add documentation for "Share project with group" API call
   - Abiliy to disable 'Share with Group' feature (via UI and API)
 
 v 8.0.1
@@ -39,7 +40,7 @@ v 7.14.0
   - Fix importing projects from GitHub Enterprise Edition.
   - Automatic approver suggestions (based on an authority of the code)
   - Add support for Jenkins unstable status
-  - Automatic approver suggestions (based on an authority of the code)  
+  - Automatic approver suggestions (based on an authority of the code)
   - Support Kerberos ticket-based authentication for Git HTTP access
 
 v 7.13.3