Simplify PR template to be able to enforce it

Author: Leguark

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,12 +4,9 @@ Please include a summary of the changes.
 Relates to <issue>
 
 # Checklist
-- [ ] My code follows the [PEP 8 style guidelines](https://www.python.org/dev/peps/pep-0008/).
 - [ ] My code uses type hinting for function and method arguments and return values.
-- [ ] My code contains descriptive and helpful docstrings 
-which are formatted per the [Google Python Style Guidelines](http://google.github.io/styleguide/pyguide.html).
-- [ ] I have created tests which entirely cover my code.
+- [ ] I have created tests which cover my code.
 - [ ] The test code either 1. demonstrates at least one valuable use case (e.g. integration tests) 
 or 2. verifies that outputs are as expected for given inputs (e.g. unit tests).
-- [ ] New and existing tests pass locally with my changes.
+- [ ] New tests pass locally with my changes.