docs: added release notes for 4.15.2 release

docs/release-notes/release-notes-4.15.2.rst

@@ -0,0 +1,49 b''
+|RCE| 4.15.2 |RNS|
+------------------
+
+Release Date
+^^^^^^^^^^^^
+
+- 2019-01-22
+
+
+New Features
+^^^^^^^^^^^^
+
+
+
+General
+^^^^^^^
+
+- Rcextensions: updated examples and fixed some small inconsistencies.
+- Api/pull-requests: trigger events for comments/review status changes.
+- Events: trigger 'review_status_change' when reviewers are updated.
+- Diffs: fixed missing limited diff container display on large diffs
+- Pull-requests: increase stability of concurrent pull requests creation by flushing
+  prematurely the statuses of commits.
+
+
+Security
+^^^^^^^^
+
+
+
+Performance
+^^^^^^^^^^^
+
+
+
+Fixes
+^^^^^
+
+- Cache: use global flock to prevent recursion when using gevent workers.
+- Permissions: clear cache for permissions correctly for forks/repos when celery is used.
+- Permissions: clear cache for default user permissions on global app permission changes.
+- Permissions: handle more cases for invalidating permission caches
+- Files-editor: preserve filemode on web edits. Editing files with +x flag removed it.
+
+
+Upgrade notes
+^^^^^^^^^^^^^
+
+- Scheduled release addressing reported problems in 4.15.X releases.

docs/release-notes/release-notes.rst

@@ -9,6 +9,7 b' Release Notes'
 .. toctree::
    :maxdepth: 1
 
+   release-notes-4.15.2.rst
    release-notes-4.15.1.rst
    release-notes-4.15.0.rst
    release-notes-4.14.1.rst