Prepare changelog for v0.12.4-rc.1

CHANGELOG.md

@@ -1,3 +1,32 @@
+Changes in [0.12.4-rc.1](https://github.com/vector-im/riot-web/releases/tag/v0.12.4-rc.1) (2017-09-19)
+======================================================================================================
+[Full Changelog](https://github.com/vector-im/riot-web/compare/v0.12.3...v0.12.4-rc.1)
+
+ * Fix test for new behaviour of 'joining' flag
+   [\#5053](https://github.com/vector-im/riot-web/pull/5053)
+ * fix really dumb blunder/typo preventing system from going to sleep.
+   [\#5080](https://github.com/vector-im/riot-web/pull/5080)
+ * T3chguy/devtools
+   [\#4735](https://github.com/vector-im/riot-web/pull/4735)
+ * CSS for unignore button in UserSettings
+   [\#5042](https://github.com/vector-im/riot-web/pull/5042)
+ * Fix alias on home page for identity room
+   [\#5044](https://github.com/vector-im/riot-web/pull/5044)
+ * generic contextual menu for tooltip/responses
+   [\#4989](https://github.com/vector-im/riot-web/pull/4989)
+ * Update from Weblate.
+   [\#5018](https://github.com/vector-im/riot-web/pull/5018)
+ * Avoid re-rendering RoomList on room switch
+   [\#5015](https://github.com/vector-im/riot-web/pull/5015)
+ * Fix menu on change keyboard language issue #4345
+   [\#4623](https://github.com/vector-im/riot-web/pull/4623)
+ * Make isInvite default to false
+   [\#4999](https://github.com/vector-im/riot-web/pull/4999)
+ * Revert "Implement sticky date separators"
+   [\#4991](https://github.com/vector-im/riot-web/pull/4991)
+ * Implement sticky date separators
+   [\#4939](https://github.com/vector-im/riot-web/pull/4939)
+
 Changes in [0.12.3](https://github.com/vector-im/riot-web/releases/tag/v0.12.3) (2017-09-06)
 ============================================================================================
 [Full Changelog](https://github.com/vector-im/riot-web/compare/v0.12.3-rc.3...v0.12.3)