lightning/.github/PULL_REQUEST_TEMPLATE.md

## What does this PR do?

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Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.
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Fixes # (issue)

# Before submitting

- [ ] Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
- [ ] Did you read the [contributor guideline](https://github.com/PyTorchLightning/pytorch-lightning/blob/master/.github/CONTRIBUTING.md), Pull Request section?
- [ ] Did you make sure your PR does only one thing, instead of bundling different changes together? Otherwise, we ask you create a separate PR for every change.
- [ ] Did you make sure to update the documentation with your changes?
- [ ] Did you write any new necessary tests? 
- [ ] Did you verify new and existing tests pass locally with your changes?
- [ ] If you made a notable change (that affects users), did you update the [CHANGELOG](https://github.com/PyTorchLightning/pytorch-lightning/blob/master/CHANGELOG.md)?

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## PR review    
Anyone in the community is free to review the PR once the tests have passed.     
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

## Did you have fun?
Make sure you had fun coding 🙃