Merge pull request #8871 from nextcloud/changelog-master-stable-3.17.0

Add changelog for 3.17.0

CHANGELOG.md

@@ -1,3 +1,13 @@
+## 3.17.0 (August, 19, 2021)
+
+UI improvements (Avatar, password dialog)
+New video player for better streaming
+Many bug fixes
+
+Minimum: NC 16 Server, Android 5.1 Lollipop
+
+For a full list, please see https://github.com/nextcloud/android/milestone/59
+
 ## 3.17.0 (-, -, -)
 
 - New upload manager @ezaquarii