Create pull_request_template.md

.github/pull_request_template.md

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+<!-- Thank you for contributing to this project! -->
+
+**PR Checklist**
+
+<!-- Please fill in the appropriate checklist below (delete whatever is not relevant). These are the most common things requested on pull requests (PRs). -->
+
+-   [ ] This comment contains a description of changes (with reason)
+-   [ ] Referenced issue is linked
+-   [ ] If you've fixed a bug or added code that should be tested, add tests!
+-   [ ] Documentation in `docs` is updated
+
+**Description of changes**
+
+<!-- Please state what you've changed and how it might affect the user. -->
+
+**Technical details**
+
+<!-- Please state any technical details such as limitations, reasons for additional dependencies, benchmarks etc. here. -->
+
+**Additional context**
+
+<!-- Add any other context or screenshots here. -->