add pull request template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,33 @@
+<!-- Template adapted from https://github.com/auth0/open-source-template/blob/master/.github/PULL_REQUEST_TEMPLATE.md -->
+
+<!-- Text between these brackets isn't actually shown to others. Check the preview if you're not sure! -->
+
+<!-- By submitting a PR to this repository, you agree to the terms within our Code of Conduct (https://github.com/lacerte/clima/blob/master/CODE-OF-CONDUCT.md). Please see https://github.com/lacerte/clima/blob/master/CONTRIBUTING.md for how to create and submit a high-quality PR for this repo. -->
+
+### Description
+
+<!--
+Describe this PR's purpose and impact, along with any background information. Please do not assume prior context.
+
+Provide details that support your chosen implementation, including: breaking changes, alternatives considered, changes to the API, etc. If the UI is being changed, please provide screenshots.
+--> 
+
+### References
+
+<!-- Include any relevant links here, like GitHub issues or Stack Overflow posts. Feel free to delete this section if there are no references. -->
+
+### Testing
+
+<!--
+Describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this repository has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.
+
+Please include any manual steps for testing any functionality not covered by unit/integration tests.
+
+Also include details of the environment this PR was developed in (device/platform/version).
+-->
+
+- [ ] This change adds test coverage for new/changed/fixed functionality
+
+### Checklist
+
+- [ ] The correct base branch is being used, if not `master`