Update CHANGELOG.md for version v1.16.0 (#478)

* Update CHANGELOG.md for version v1.16.0

Added new version v1.16.0 and updated previous versions in the changelog.

* Revise CHANGELOG with recent version updates

Updated changelog to include new versions and changes.

* Update CHANGELOG.md

Author: nytian

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 
-## v1.15.1 (Unreleased)
+## v1.16.0
+- Include Exception Properties at FailureDetails by nytian in([#474](https://github.com/microsoft/durabletask-dotnet/pull/474))
+
+## v1.15.1 
 - Add version check to activities by @halspang in ([#472](https://github.com/microsoft/durabletask-dotnet/pull/472))
 
 ## v1.15.0
@@ -300,3 +303,5 @@ Microsoft.DurableTask.Generators
 
 Initial public release
 
+
+