Update changelog for 1.3.1 release
- v1.15.x
- v1.14.x
+## 1.3.1 (November 18, 2019)
+
+### Supported Kubernetes versions
+
+- v1.16.x
+- v1.15.x
+- v1.14.x
+
### Improvements
- Add support for helm 3 CLI tool. (https://github.com/pulumi/pulumi-kubernetes/pull/882).
