Summary:
## Kats

Thank you for contributing! Please take a moment to review our [**contributing guidelines**](https://github.com/facebookresearch/Kats/blob/master/CONTRIBUTING.md)
to make the process easy and effective for everyone involved.

- [ ] Fork the repo and create your branch from master.
- [ ] If you've added code that should be tested, add tests.
- [ ] If you've changed APIs, update the documentation.
- [ ] Ensure the test suite passes.
- [ ] Make sure your code lints.
- [ ] If you haven't already, complete the Contributor License Agreement ("CLA").

Contributor License Agreement ("CLA")
In order to accept your pull request, we need you to submit a CLA. You only need to do this once to work on any of Facebook's open source projects.

Complete your CLA here: https://code.facebook.com/cla

`Ver: Kats v1.02`

Pull Request resolved: facebookresearch#119

Test Plan:
Imported from GitHub, without a `Test Plan:` line.

Tested notebook locally and on colab.

Reviewed By: iamxiaodong

Differential Revision: D30717191

Pulled By: rohanfb

fbshipit-source-id: 5814a0956fc34b8d7bc8a4a6ce2aeac3471062c5