Updated PR checklist

Author: seanlaw

docs/pull_request_template.md

@@ -4,13 +4,20 @@ Below is a simple checklist but please do not hesitate to ask for assistance!
 
 - [ ] Read our [Contributing Guide](https://stumpy.readthedocs.io/en/latest/Contribute.html)
 - [ ] Referenced a Github issue (or create one if one doesn't already exist)
-- [ ] Left a meaningful comment on the original Github issue to discuss the detailed approach for your contribution
-- [ ] Forked, cloned, and checkedout the newest version of the code
+- [ ] Read and reviewed all of the comments in the Github issue that you've referenced (along with cross-referenced issues/pull requests) to ensure that the issue still requires a pull request
+- [ ] Checked that the issue has not already been assigned to anybody else or is already being addressed in another pull request
+- [ ] Left a meaningful comment on the original Github issue to discuss the detailed approach for your contribution and received confirmation from the maintainers before proceeding with this pull request
+- [ ] Forked, cloned, and checked out the newest version of the code
 - [ ] Created a new branch
 - [ ] Made necessary code changes
 - [ ] Installed `black` (i.e., `python -m pip install black` or `conda install -c conda-forge black`)
 - [ ] Installed `flake8` (i.e., `python -m pip install flake8` or `conda install -c conda-forge flake8`)
 - [ ] Installed `pytest-cov` (i.e., `python -m pip install pytest-cov` or `conda install -c conda-forge pytest-cov`)
 - [ ] Ran `black --exclude=".*\.ipynb" --extend-exclude=".venv" --diff ./` in the root stumpy directory
 - [ ] Ran `flake8 --extend-exclude=.venv ./` in the root stumpy directory
-- [ ] Ran `./setup.sh dev && ./test.sh` in the root stumpy directory
+- [ ] Ran `./setup.sh dev && ./test.sh` in the root stumpy directory and ensured that all tests are passing locally
+- [ ] Check this box if AI code assistance was used to generate 15%+ of the code in this pull request
+
+Please do not commit any code to avoid/circumvent a failing test and, instead, engage in a discussion (below) to determine the best course of action. 
+
+Only request a review **after** the checklist above is fully completed!