Update CHANGELOG (#34)

Author: Vignesh Raja

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.0.3
+
+- Remove extraneous log message in `AsyncEventHandler`
+- Add `jackson-annotations` as a compiled dependency
+
 ## 1.0.2
 
 - Gracefully handle datafile that doesn't contain required fields
@@ -7,7 +12,6 @@
 - Allow for configurability of `clientEngine` and `clientVersion` through `Optimizely.Builder`
 - Remove ppid query string from V1 events
 
-
 ## 1.0.0
 
 - Introduce support for Full Stack projects in Optimizely X with no breaking changes from previous version