NEWS: update for 3.1.7

Docs/NEWS

@@ -1,5 +1,13 @@
 # Changelog
 
+## iOS [3.1.7]
+
+· Added support for SMB 2
+· Added support for external keyboard shortcuts
+· Fixed Chromecast showing a black screen for certain files
+· Fixed an issue where a user couldn't navigate out of a OneDrive folder
+· Bugfixes and stability improvements
+
 ## iOS [3.1.6]
 
 · Fixed OneDrive integration by adopting newer Api