Bump to 1.2.0 to upgrade react version

Author: mic159

CHANGELOG.md

@@ -1,6 +1,13 @@
 Changelog
 =========
 
+### 1.2.0
+
+Update react to 16.4 to support fragments.
+
+*Note:* JS only release. Python package remains at 1.0.0
+
+
 ### 1.1.1
 
 Revert to non-streaming API due to performance degredation.