Update CHANGELOG.md for 9.3.3

[ci skip]

CHANGELOG.md

@@ -2,6 +2,15 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
+## 9.3.3 (2017-06-30)
+
+- Fix head pipeline stored in merge request for external pipelines. !12478
+- Bring back branches badge to main project page. !12548
+- Fix diff of requirements.txt file by not matching newlines as part of package names.
+- Perform housekeeping only when an import of a fresh project is completed.
+- Fixed issue boards closed list not showing all closed issues.
+- Fixed multi-line markdown tooltip buttons in issue edit form.
+
 ## 9.3.2 (2017-06-27)
 - API: Fix optional arugments for POST :id/variables. !12474

changelogs/unreleased/dm-dependency-linker-newlines.yml

----
-title: Fix diff of requirements.txt file by not matching newlines as part of package
-  names
-merge_request:
-author:

changelogs/unreleased/fix-34417.yml

----
-title: Perform housekeeping only when an import of a fresh project is completed
-merge_request:
-author:

changelogs/unreleased/fix-head-pipeline-for-commit-status.yml

----
-title: Fix head pipeline stored in merge request for external pipelines
-merge_request: 12478
-author:

changelogs/unreleased/highest-return-on-diff-investment.yml

----
-title: Bring back branches badge to main project page
-merge_request: 12548
-author:

changelogs/unreleased/issue-boards-closed-list-all.yml

----
-title: Fixed issue boards closed list not showing all closed issues
-merge_request:
-author:

changelogs/unreleased/issue-form-multiple-line-markdown.yml

----
-title: Fixed multi-line markdown tooltip buttons in issue edit form
-merge_request:
-author: