kmon/.github/PULL_REQUEST_TEMPLATE.md

## Description
<!--- Describe your changes in detail -->

## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->

## How Has This Been Tested?
<!--- Please describe in detail how you tested your changes. -->
<!--- Include details of your testing environment, and the tests you ran to -->
<!--- see how your change affects other areas of the code, etc. -->

## Screenshots / Output (if appropriate):

## Types of changes
<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)
- [ ] Documentation (no code change)
- [ ] Refactor (refactoring production code)
- [ ] Other <!--- (provide information) -->

## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
- [ ] My code follows the code style of this project.
- [ ] I have updated the [documentation](https://github.com/orhun/kmon/blob/master/README.md) and [changelog](https://github.com/orhun/kmon/blob/master/CHANGELOG.md) accordingly.
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.
- [ ] [Rustfmt](https://github.com/rust-lang/rustfmt) and [Rust-clippy](https://github.com/rust-lang/rust-clippy) passed.