CHANGELOG.md in onnxruntime-0.3.0 vs CHANGELOG.md in onnxruntime-0.3.1

@@ -1,4 +1,9 @@
+## 0.3.1 (2020-05-18)
+
+- Updated ONNX Runtime to 1.3.0
+- Added `custom_metadata_map` to model metadata
+
 ## 0.3.0 (2020-03-11)
 
 - Updated ONNX Runtime to 1.2.0
 - Added model metadata
 - Added `end_profiling` method