update whatsnew

Author: theweavrs

BreadPlayer.Views.UWP/Assets/whatsnew.txt

@@ -9,6 +9,7 @@
 8. Fixed issue where Now Playing list was always empty on startup.
 9. Fixed issue where now playing song wasn't highlighted on startup.
 10. Fixed issue where lyrics weren't being cached.
+11. Fixed memory leak when navigating to Settings.
 
 What's New:
 1. Added Musixmatch as a new Lyric source.