Update Release notes

Author: Julian Kast

CHANGELOG.md

@@ -1,4 +1,4 @@
-# 5.1.1 Release Notes
+# 5.2.0 Release Notes
 
 ## Summary:
 ||Version|
@@ -8,13 +8,41 @@
 | **Tested Targeting** | Android 30
 
 
-## Bug Fixes:
+## Bug Fixes / Enhancements:
 
-- [Add null checks and synch around session in LCM](https://github.com/smartdevicelink/sdl_java_suite/pull/1659)
+- [MenuManager sending secondary image with menuCells when menuCommandSecondaryImage is not supported.](https://github.com/smartdevicelink/sdl_java_suite/issues/1688)
 
-- [Add NPE check in BaseChoiceSetManager](https://github.com/smartdevicelink/sdl_java_suite/pull/1648)
+- [IllegalArgumentException when starting video stream with custom RPC MTU](https://github.com/smartdevicelink/sdl_java_suite/issues/1667)
 
-- [Attempt to fix unreproducible ClassCastException](https://github.com/smartdevicelink/sdl_java_suite/pull/1660)
+- [Send voiceCommand with duplicate strings](https://github.com/smartdevicelink/sdl_java_suite/issues/1664)
+
+- [Two voiceCommands contains the same string](https://github.com/smartdevicelink/sdl_java_suite/issues/1677)
+
+- [java.lang.NegativeArraySizeException Crash at SdlPsm.java line 241 com.smartdevicelink.transport.SdlPsm.transitionOnInput](https://github.com/smartdevicelink/sdl_java_suite/issues/1678)
+
+- [Exception handling variances](https://github.com/smartdevicelink/sdl_java_suite/issues/1687)
+
+- [Allow SdlDeviceListener to start after BT connection](https://github.com/smartdevicelink/sdl_java_suite/pull/1685)
+
+- [voiceCommand that contains no string should be removed](https://github.com/smartdevicelink/sdl_java_suite/issues/1675)
+
+- [Image returned as "not uploaded" in certain circumstances when it's already uploaded, leading to the image being unusable](https://github.com/smartdevicelink/sdl_java_suite/issues/1692)
+
+- [Primary Graphic not sent to SDL Core for Media Template ](https://github.com/smartdevicelink/sdl_java_suite/issues/1690)
+
+- [Race condition leads to NPE in TransportManager](https://github.com/smartdevicelink/sdl_java_suite/issues/1703)
+
+- [Avoid deleting and setting identical voice commands](https://github.com/smartdevicelink/sdl_java_suite/issues/1676)
+
+- [Sdl disconnection is not notified to the app](https://github.com/smartdevicelink/sdl_java_suite/issues/1697)
+
+- [PredefinedLayout.NON_MEDIA not found in templatesAvailable](https://github.com/smartdevicelink/sdl_java_suite/issues/1705)
+
+- [Lockscreen should show again after dismissal if a DD notification is received where DismissalEnabled is false](https://github.com/smartdevicelink/sdl_java_suite/issues/1695)
+
+- [Choice Cells and Menu Cells do not take which properties are available into account for uniqueness](https://github.com/smartdevicelink/sdl_java_suite/issues/1682)
+
+- [BSON library should be updated to the latest version (1.2.5)](https://github.com/smartdevicelink/sdl_java_suite/issues/1712)