Prepare changelog for v3.17.0

Author: RiotRobot

CHANGELOG.md

@@ -1,3 +1,15 @@
+Changes in [3.17.0](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.17.0) (2021-03-29)
+=====================================================================================================
+[Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v3.17.0-rc.1...v3.17.0)
+
+ * Upgrade to JS SDK 9.10.0
+ * [Release] Tweak cross-signing copy
+   [\#5808](https://github.com/matrix-org/matrix-react-sdk/pull/5808)
+ * [Release] Fix crash on login when using social login
+   [\#5809](https://github.com/matrix-org/matrix-react-sdk/pull/5809)
+ * [Release] Fix edge case with redaction grouper messing up continuations
+   [\#5799](https://github.com/matrix-org/matrix-react-sdk/pull/5799)
+
 Changes in [3.17.0-rc.1](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.17.0-rc.1) (2021-03-25)
 ===============================================================================================================
 [Full Changelog](https://github.com/matrix-org/matrix-react-sdk/compare/v3.16.0...v3.17.0-rc.1)