Mnes 934 added pr template (#20)

docs create pull request template

docs/pull_request_template.md

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+# Description
+
+Please include a summary of the changes and link the related github issue. 
+Please include relevant motivation and context. 
+
+Fixes # (Issue)
+
+## Type of change
+
+Please delete options that are not relevant.
+
+- [ ] Minor change (non-breaking change, e.g. documentation adaption)
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that causes existing functionality to not work as expected)
+
+# Checklist:
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix or my feature works
+- [ ] New and existing tests pass locally with my changes
+- [ ] My changes contain no console logs
+