## Changes in this pull request



## Pull request checklist

- [ ] All tests pass. Demo project builds and runs.
- [ ] I added tests, an experiment, or detailed why my change isn't tested.
- [ ] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)

## Changes in this pull request



## Pull request checklist

- [ ] All tests pass. Demo project builds and runs.
- [ ] I added tests, an experiment, or detailed why my change isn't tested.
- [ ] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes.
- [ ] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)

Add changelog to PR template
Add changelog to PR template

Summary:
If anything will help me remember.
Closes https://github.com/Instagram/IGListKit/pull/359

Differential Revision: D4365179

Pulled By: jessesquires

fbshipit-source-id: e002bc6bc31f8d2af59a5d5303a2c5cb09d780b6
