Update CHANGELOG.md (mattermost#2589)

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Mattermost Mobile Apps Changelog
 
+## 1.16.1 Release
+- Release Date: February 21, 2019
+- Server Versions Supported: Server v4.10+ is required, Self-Signed SSL Certificates are not supported unless the user installs the CA certificate on their device
+
+### Combatibility
+ - Mobile App v1.13+ is required for Mattermost Server v5.4+.
+ - Android operating system 7+ [is required by Google](https://android-developers.googleblog.com/2017/12/improving-app-security-and-performance.html).
+
+### Bug Fixes
+ - Fixed an issue where link previews and reactions weren't displayed when post metadata was disabled.
+ - Fixed an issue on Android where the app crashed when sharing multiple files.
+
 ## 1.16.0 Release
 - Release Date: February 16, 2019
 - Server Versions Supported: Server v4.10+ is required, Self-Signed SSL Certificates are not supported unless the user installs the CA certificate on their device