Log Message:
py-django-extensions: updated to 3.1.2

3.1.2
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Changes:
- Improvement: shell_plus, not save ipython history when using Jupyter
- Improvement: docs, fix spelling mistakes
- Improvement: tests, move to Github Actions instead of Travis
- Improvement: drop_test_database, delete all cloned test databases
- Improvement: setup.py, Added minimum Django>=2.2 version to PyPI package
- Improvement: shell_plus, fix --command globals / locals error