Update CHANGELOG.md for 10.6.4

[ci skip]

CHANGELOG.md

@@ -2,6 +2,25 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 10.6.4 (2018-04-09)
+
+### Fixed (9 changes, 1 of them is from the community)
+
+- Correct copy text for the promote milestone and label modals. !17726
+- Avoid validation errors when running the Pages domain verification service. !17992
+- Fix autolinking URLs containing ampersands. !18045
+- Fix exceptions raised when migrating pipeline stages in the background. !18076
+- Work around Prometheus Helm chart name changes to fix integration. !18206 (joshlambert)
+- Don't show Jump to Discussion button on Issues.
+- Fix data race between ObjectStorage background_upload and Pages publishing.
+- Fix listing commit branch/tags that contain special characters.
+- Fix 404 in group boards when moving issue between lists.
+
+### Performance (1 change)
+
+- Free open file descriptors and libgit2 buffers in UpdatePagesService.
+
+
 ## 10.6.3 (2018-04-03)
 
 ### Security (2 changes)

changelogs/unreleased/43794-fix-domain-verification-validation-errors.yml

----
-title: Avoid validation errors when running the Pages domain verification service
-merge_request: 17992
-author:
-type: fixed

changelogs/unreleased/44649-reference-parsing-conflicting-with-auto-linking.yml

----
-title: Fix autolinking URLs containing ampersands
-merge_request: 18045
-author:
-type: fixed

changelogs/unreleased/44717-no-resolve-issue.yml

----
-title: Don't show Jump to Discussion button on Issues
-merge_request:
-author:
-type: fixed

changelogs/unreleased/45070-prometheus-integration-via-kubernetes-is-broken.yml

----
-title: Work around Prometheus Helm chart name changes to fix integration
-merge_request: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18206/
-author: joshlambert
-type: fixed

changelogs/unreleased/ac-fix-use_file-race.yml

----
-title: Fix data race between ObjectStorage background_upload and Pages publishing
-merge_request:
-author:
-type: fixed

changelogs/unreleased/dm-refs-contains-sha-encoding.yml

----
-title: Fix listing commit branch/tags that contain special characters
-merge_request:
-author:
-type: fixed

changelogs/unreleased/fix-gb-fix-background-pipeline-stages-migration.yml

----
-title: Fix exceptions raised when migrating pipeline stages in the background
-merge_request: 18076
-author:
-type: fixed

changelogs/unreleased/issue_44551.yml

----
-title: Fix 404 in group boards when moving issue between lists
-merge_request:
-author:
-type: fixed

changelogs/unreleased/jivl-change-copy-text-promote-milestones-labels.yml

----
-title: Correct copy text for the promote milestone and label modals
-merge_request: 17726
-author:
-type: fixed

changelogs/unreleased/sh-cleanup-pages-worker.yml

----
-title: Free open file descriptors and libgit2 buffers in UpdatePagesService
-merge_request:
-author:
-type: performance