Prepare changelog for v0.12.7-rc.1

Author: dbkr

CHANGELOG.md

@@ -1,3 +1,22 @@
+Changes in [0.12.7-rc.1](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.12.7-rc.1) (2018-06-06)
+===============================================================================================================
+[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.12.6...v0.12.7-rc.1)
+
+ * Update from Weblate.
+   [\#1944](https://github.com/matrix-org/matrix-react-sdk/pull/1944)
+ * Import react as React in src/components/views/elements/DNDTagTile.js
+   [\#1943](https://github.com/matrix-org/matrix-react-sdk/pull/1943)
+ * Fix click on faded left/right/middle panel -> close settings
+   [\#1940](https://github.com/matrix-org/matrix-react-sdk/pull/1940)
+ * Add null-guard to support browsers that don't support performance
+   [\#1942](https://github.com/matrix-org/matrix-react-sdk/pull/1942)
+ * Support third party integration managers in AppPermission
+   [\#1455](https://github.com/matrix-org/matrix-react-sdk/pull/1455)
+ * Update pinned messages in real time
+   [\#1934](https://github.com/matrix-org/matrix-react-sdk/pull/1934)
+ * Expose at-room power level setting
+   [\#1938](https://github.com/matrix-org/matrix-react-sdk/pull/1938)
+
 Changes in [0.12.6](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v0.12.6) (2018-05-25)
 =====================================================================================================
 [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v0.12.6-rc.1...v0.12.6)