update change log

Author: vtrifonov

CHANGELOG.md

@@ -12,6 +12,15 @@
 - [java.lang.NullPointerException in Metadata generator(#13795)](https://github.com/NativeScript/android-runtime/issues/1379)
 - [Buffer() is deprecated(#1392)](https://github.com/NativeScript/android-runtime/pull/1392)
 - [Warnings when building android(#1396)](https://github.com/NativeScript/android-runtime/issues/1396)
+- [No JS stack on discardedError and unhandledError(#1354)](https://github.com/NativeScript/android-runtime/issues/1354)
+
+## Breaking Changes
+
+- Exception information in onDiscarderError and onUnhandledError is changed so that `message` contains the exception message and `stackTrace` contains only the stackTrace. In the previous implementation `stackTrace` contained some additional details (including the exception message) and the `message` was something like:
+
+    ```
+    The application crashed because of an uncaught exception. You can look at "stackTrace" or "nativeException" for more detailed information about the exception.
+    ```
 
 5.4.0
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